109659420 has 240 divisors, whose sum is σ = 382491648. Its totient is φ = 26127360.

The previous prime is 109659419. The next prime is 109659421. The reversal of 109659420 is 24956901.

It is an interprime number because it is at equal distance from previous prime (109659419) and next prime (109659421).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109659421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 863397 + ... + 863523.

Almost surely, 2^109659420 is an apocalyptic number.

109659420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109659420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191245824).

109659420 is an abundant number, since it is smaller than the sum of its proper divisors (272832228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109659420 is a wasteful number, since it uses less digits than its factorization.

109659420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 109659420 is about 10471.8393799752. The cubic root of 109659420 is about 478.6469709008.

It can be divided in two parts, 1096 and 59420, that added together give a square (60516 = 246²).

The spelling of 109659420 in words is "one hundred nine million, six hundred fifty-nine thousand, four hundred twenty".