390907087 has 8 divisors (see below), whose sum is σ = 394232832. Its totient is φ = 387593400.

The previous prime is 390907081. The next prime is 390907123. The reversal of 390907087 is 780709093.

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

It is a cyclic number.

It is not a de Polignac number, because 390907087 - 2²⁷ = 256689359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390907081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69262 + ... + 74692.

It is an arithmetic number, because the mean of its divisors is an integer number (49279104).

Almost surely, 2^390907087 is an apocalyptic number.

390907087 is a deficient number, since it is larger than the sum of its proper divisors (3325745).

390907087 is a wasteful number, since it uses less digits than its factorization.

390907087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 390907087 is about 19771.3703875073. The cubic root of 390907087 is about 731.1803553903.

The spelling of 390907087 in words is "three hundred ninety million, nine hundred seven thousand, eighty-seven".