390735437697 has 48 divisors (see below), whose sum is σ = 640669056768. Its totient is φ = 227397680640.

The previous prime is 390735437689. The next prime is 390735437699. The reversal of 390735437697 is 796734537093.

It is not a de Polignac number, because 390735437697 - 2³ = 390735437689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390735437699) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 545608 + ... + 1038825.

It is an arithmetic number, because the mean of its divisors is an integer number (13347272016).

Almost surely, 2^390735437697 is an apocalyptic number.

It is an amenable number.

390735437697 is a deficient number, since it is larger than the sum of its proper divisors (249933619071).

390735437697 is a wasteful number, since it uses less digits than its factorization.

390735437697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584550 (or 1584547 counting only the distinct ones).

The product of its (nonzero) digits is 90016920, while the sum is 63.

The spelling of 390735437697 in words is "three hundred ninety billion, seven hundred thirty-five million, four hundred thirty-seven thousand, six hundred ninety-seven".