3990002457 has 32 divisors (see below), whose sum is σ = 6126177024. Its totient is φ = 2262758400.

The previous prime is 3990002449. The next prime is 3990002473. The reversal of 3990002457 is 7542000993.

It is not a de Polignac number, because 3990002457 - 2³ = 3990002449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3990002417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1633357 + ... + 1635797.

It is an arithmetic number, because the mean of its divisors is an integer number (191443032).

Almost surely, 2^3990002457 is an apocalyptic number.

It is an amenable number.

3990002457 is a deficient number, since it is larger than the sum of its proper divisors (2136174567).

3990002457 is a wasteful number, since it uses less digits than its factorization.

3990002457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 3990002457 is about 63166.4662380285. The cubic root of 3990002457 is about 1586.0774394259.

The spelling of 3990002457 in words is "three billion, nine hundred ninety million, two thousand, four hundred fifty-seven".