212539377 has 12 divisors (see below), whose sum is σ = 298455440. Its totient is φ = 134165880.

The previous prime is 212539373. The next prime is 212539391. The reversal of 212539377 is 773935212.

It is not a de Polignac number, because 212539377 - 2² = 212539373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212539373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109102 + ... + 111032.

Almost surely, 2^212539377 is an apocalyptic number.

It is an amenable number.

212539377 is a deficient number, since it is larger than the sum of its proper divisors (85916063).

212539377 is an frugal number, since it uses more digits than its factorization.

212539377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884 (or 1953 counting only the distinct ones).

The product of its digits is 79380, while the sum is 39.

The square root of 212539377 is about 14578.7302945078. The cubic root of 212539377 is about 596.7784531285.

The spelling of 212539377 in words is "two hundred twelve million, five hundred thirty-nine thousand, three hundred seventy-seven".