387420492 has 48 divisors (see below), whose sum is σ = 916627712. Its totient is φ = 127344960.

The previous prime is 387420479. The next prime is 387420499. The reversal of 387420492 is 294024783.

It is a self number, because there is not a number n which added to its sum of digits gives 387420492.

It is not an unprimeable number, because it can be changed into a prime (387420499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378942 + ... + 379962.

Almost surely, 2^387420492 is an apocalyptic number.

It is an amenable number.

387420492 is an abundant number, since it is smaller than the sum of its proper divisors (529207220).

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

387420492 is a wasteful number, since it uses less digits than its factorization.

387420492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1436 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 387420492 is about 19683.0000762079. Note that the first 4 decimals coincide. The cubic root of 387420492 is about 729.0000018817. Note that the first 5 decimals are identical.

The spelling of 387420492 in words is "three hundred eighty-seven million, four hundred twenty thousand, four hundred ninety-two".