39669252 has 24 divisors (see below), whose sum is σ = 105784896. Its totient is φ = 11334048.

The previous prime is 39669239. The next prime is 39669277. The reversal of 39669252 is 25296693.

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 236043 + ... + 236210.

It is an arithmetic number, because the mean of its divisors is an integer number (4407704).

Almost surely, 2^39669252 is an apocalyptic number.

It is an amenable number.

39669252 is an abundant number, since it is smaller than the sum of its proper divisors (66115644).

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

39669252 is a wasteful number, since it uses less digits than its factorization.

39669252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472267 (or 472265 counting only the distinct ones).

The product of its digits is 174960, while the sum is 42.

The square root of 39669252 is about 6298.3531180778. The cubic root of 39669252 is about 341.0499607170.

The spelling of 39669252 in words is "thirty-nine million, six hundred sixty-nine thousand, two hundred fifty-two".