39696090 has 64 divisors (see below), whose sum is σ = 109382400. Its totient is φ = 9031680.

The previous prime is 39696053. The next prime is 39696101. The reversal of 39696090 is 9069693.

It is a super-2 number, since 2×39696090² = 3151559122576200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88186 + ... + 88634.

It is an arithmetic number, because the mean of its divisors is an integer number (1709100).

Almost surely, 2^39696090 is an apocalyptic number.

39696090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 39696090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54691200).

39696090 is an abundant number, since it is smaller than the sum of its proper divisors (69686310).

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

39696090 is a wasteful number, since it uses less digits than its factorization.

39696090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 39696090 is about 6300.4833147942. The cubic root of 39696090 is about 341.1268551629.

The spelling of 39696090 in words is "thirty-nine million, six hundred ninety-six thousand, ninety".