102699309 has 16 divisors (see below), whose sum is σ = 140925888. Its totient is φ = 66477312.

The previous prime is 102699307. The next prime is 102699367. The reversal of 102699309 is 903996201.

It is a happy number.

It is not a de Polignac number, because 102699309 - 2¹ = 102699307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102699307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104629 + ... + 105605.

It is an arithmetic number, because the mean of its divisors is an integer number (8807868).

Almost surely, 2^102699309 is an apocalyptic number.

It is an amenable number.

102699309 is a deficient number, since it is larger than the sum of its proper divisors (38226579).

102699309 is an equidigital number, since it uses as much as digits as its factorization.

102699309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 102699309 is about 10134.0667552567. The cubic root of 102699309 is about 468.2982201469.

The spelling of 102699309 in words is "one hundred two million, six hundred ninety-nine thousand, three hundred nine".