390526397 has 8 divisors (see below), whose sum is σ = 416756736. Its totient is φ = 364658112.

The previous prime is 390526391. The next prime is 390526427. The reversal of 390526397 is 793625093.

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 390526397 - 2⁸ = 390526141 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 (390526391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88283 + ... + 92600.

It is an arithmetic number, because the mean of its divisors is an integer number (52094592).

Almost surely, 2^390526397 is an apocalyptic number.

It is an amenable number.

390526397 is a deficient number, since it is larger than the sum of its proper divisors (26230339).

390526397 is a wasteful number, since it uses less digits than its factorization.

390526397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181027.

The product of its (nonzero) digits is 306180, while the sum is 44.

The square root of 390526397 is about 19761.7407381030. The cubic root of 390526397 is about 730.9429217673.

The spelling of 390526397 in words is "three hundred ninety million, five hundred twenty-six thousand, three hundred ninety-seven".