109387215 has 96 divisors (see below), whose sum is σ = 226077696. Its totient is φ = 47900160.

The previous prime is 109387211. The next prime is 109387219. The reversal of 109387215 is 512783901.

It is an interprime number because it is at equal distance from previous prime (109387211) and next prime (109387219).

It is not a de Polignac number, because 109387215 - 2² = 109387211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109387215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109387211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1498419 + ... + 1498491.

It is an arithmetic number, because the mean of its divisors is an integer number (2354976).

Almost surely, 2^109387215 is an apocalyptic number.

109387215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109387215 is an abundant number, since it is smaller than the sum of its proper divisors (116690481).

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

109387215 is a wasteful number, since it uses less digits than its factorization.

109387215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 109387215 is about 10458.8343040704. The cubic root of 109387215 is about 478.2505980433.

The spelling of 109387215 in words is "one hundred nine million, three hundred eighty-seven thousand, two hundred fifteen".