387297908490 has 32 divisors (see below), whose sum is σ = 929565999936. Its totient is φ = 103273773440.

The previous prime is 387297908479. The next prime is 387297908513. The reversal of 387297908490 is 94809792783.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216445 + ... + 906335.

It is an arithmetic number, because the mean of its divisors is an integer number (29048937498).

Almost surely, 2^387297908490 is an apocalyptic number.

387297908490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

387297908490 is an abundant number, since it is smaller than the sum of its proper divisors (542268091446).

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

387297908490 is a wasteful number, since it uses less digits than its factorization.

387297908490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708614.

The product of its (nonzero) digits is 54867456, while the sum is 66.

The spelling of 387297908490 in words is "three hundred eighty-seven billion, two hundred ninety-seven million, nine hundred eight thousand, four hundred ninety".