392011227664 has 135 divisors (see below), whose sum is σ = 901131763887. Its totient is φ = 164721501504.

The previous prime is 392011227659. The next prime is 392011227721. The reversal of 392011227664 is 466722110293.

The square root of 392011227664 is 626108.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×392011227664² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 392011227664.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1034330227 + ... + 1034330605.

Almost surely, 2^392011227664 is an apocalyptic number.

392011227664 is the 626108-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 392011227664

392011227664 is an abundant number, since it is smaller than the sum of its proper divisors (509120536223).

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

392011227664 is an frugal number, since it uses more digits than its factorization.

392011227664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 392011227664 in words is "three hundred ninety-two billion, eleven million, two hundred twenty-seven thousand, six hundred sixty-four".