387722986 has 24 divisors (see below), whose sum is σ = 681428160. Its totient is φ = 164965752.

The previous prime is 387722971. The next prime is 387723059. The reversal of 387722986 is 689227783.

It is a super-2 number, since 2×387722986² = 300658227745512392, which contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610 + ... + 27853.

It is an arithmetic number, because the mean of its divisors is an integer number (28392840).

Almost surely, 2^387722986 is an apocalyptic number.

387722986 is a deficient number, since it is larger than the sum of its proper divisors (293705174).

387722986 is a wasteful number, since it uses less digits than its factorization.

387722986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28618 (or 28611 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 387722986 is about 19690.6827205153. The cubic root of 387722986 is about 729.1896844645.

The spelling of 387722986 in words is "three hundred eighty-seven million, seven hundred twenty-two thousand, nine hundred eighty-six".