390697266 has 16 divisors (see below), whose sum is σ = 822520800. Its totient is φ = 123378048.

The previous prime is 390697261. The next prime is 390697267. The reversal of 390697266 is 662796093.

It is not an unprimeable number, because it can be changed into a prime (390697261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1713471 + ... + 1713698.

It is an arithmetic number, because the mean of its divisors is an integer number (51407550).

Almost surely, 2^390697266 is an apocalyptic number.

390697266 is an abundant number, since it is smaller than the sum of its proper divisors (431823534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390697266 is a wasteful number, since it uses less digits than its factorization.

390697266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427193.

The product of its (nonzero) digits is 734832, while the sum is 48.

The square root of 390697266 is about 19766.0634927646. The cubic root of 390697266 is about 731.0495106143.

The spelling of 390697266 in words is "three hundred ninety million, six hundred ninety-seven thousand, two hundred sixty-six".