109321407 has 80 divisors (see below), whose sum is σ = 193197312. Its totient is φ = 60963840.

The previous prime is 109321397. The next prime is 109321409. The reversal of 109321407 is 704123901.

It is not a de Polignac number, because 109321407 - 2²⁰ = 108272831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109321409) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 554833 + ... + 555029.

Almost surely, 2^109321407 is an apocalyptic number.

109321407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

109321407 is a deficient number, since it is larger than the sum of its proper divisors (83875905).

109321407 is a wasteful number, since it uses less digits than its factorization.

109321407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 109321407 is about 10455.6877822552. The cubic root of 109321407 is about 478.1546726683.

It can be divided in two parts, 1093 and 21407, that added together give a square (22500 = 150²).

The spelling of 109321407 in words is "one hundred nine million, three hundred twenty-one thousand, four hundred seven".