211964994 has 12 divisors (see below), whose sum is σ = 459257526. Its totient is φ = 70654992.

The previous prime is 211964983. The next prime is 211965001. The reversal of 211964994 is 499469112.

It can be written as a sum of positive squares in only one way, i.e., 115670025 + 96294969 = 10755^2 + 9813^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5887899 + ... + 5887934.

Almost surely, 2^211964994 is an apocalyptic number.

211964994 is an abundant number, since it is smaller than the sum of its proper divisors (247292532).

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

211964994 is a wasteful number, since it uses less digits than its factorization.

211964994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11775841 (or 11775838 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 211964994 is about 14559.0176179576. The cubic root of 211964994 is about 596.2403745661.

The spelling of 211964994 in words is "two hundred eleven million, nine hundred sixty-four thousand, nine hundred ninety-four".