386929972 has 48 divisors (see below), whose sum is σ = 821205504. Its totient is φ = 157104000.

The previous prime is 386929937. The next prime is 386929987. The reversal of 386929972 is 279929683.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6822 + ... + 28642.

It is an arithmetic number, because the mean of its divisors is an integer number (17108448).

Almost surely, 2^386929972 is an apocalyptic number.

It is an amenable number.

386929972 is an abundant number, since it is smaller than the sum of its proper divisors (434275532).

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

386929972 is a wasteful number, since it uses less digits than its factorization.

386929972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21880 (or 21878 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 55.

The square root of 386929972 is about 19670.5356307346. The cubic root of 386929972 is about 728.6922053047.

The spelling of 386929972 in words is "three hundred eighty-six million, nine hundred twenty-nine thousand, nine hundred seventy-two".