213979412 has 6 divisors (see below), whose sum is σ = 374463978. Its totient is φ = 106989704.

The previous prime is 213979397. The next prime is 213979421. The reversal of 213979412 is 214979312.

It can be written as a sum of positive squares in only one way, i.e., 213919876 + 59536 = 14626^2 + 244^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26747423 + ... + 26747430.

It is an arithmetic number, because the mean of its divisors is an integer number (62410663).

Almost surely, 2^213979412 is an apocalyptic number.

It is an amenable number.

213979412 is a deficient number, since it is larger than the sum of its proper divisors (160484566).

213979412 is a wasteful number, since it uses less digits than its factorization.

213979412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53494857 (or 53494855 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 213979412 is about 14628.0351380491. The cubic root of 213979412 is about 598.1232208059.

The spelling of 213979412 in words is "two hundred thirteen million, nine hundred seventy-nine thousand, four hundred twelve".