39402387 has 12 divisors (see below), whose sum is σ = 58877520. Its totient is φ = 25362288.

The previous prime is 39402367. The next prime is 39402421. The reversal of 39402387 is 78320493.

It is not a de Polignac number, because 39402387 - 2⁶ = 39402323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39402317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75223 + ... + 75744.

It is an arithmetic number, because the mean of its divisors is an integer number (4906460).

Almost surely, 2^39402387 is an apocalyptic number.

39402387 is a deficient number, since it is larger than the sum of its proper divisors (19475133).

39402387 is a wasteful number, since it uses less digits than its factorization.

39402387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151002 (or 150999 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 39402387 is about 6277.1320680706. The cubic root of 39402387 is about 340.2834631454.

The spelling of 39402387 in words is "thirty-nine million, four hundred two thousand, three hundred eighty-seven".