39660402 has 8 divisors (see below), whose sum is σ = 79320816. Its totient is φ = 13220132.

The previous prime is 39660359. The next prime is 39660403. The reversal of 39660402 is 20406693.

It is a sphenic number, since it is the product of 3 distinct primes.

39660402 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 39660402.

It is not an unprimeable number, because it can be changed into a prime (39660403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3305028 + ... + 3305039.

It is an arithmetic number, because the mean of its divisors is an integer number (9915102).

Almost surely, 2^39660402 is an apocalyptic number.

39660402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39660402 is a wasteful number, since it uses less digits than its factorization.

39660402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610072.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 39660402 is about 6297.6505142791. The cubic root of 39660402 is about 341.0245966841.

The spelling of 39660402 in words is "thirty-nine million, six hundred sixty thousand, four hundred two".