747977492 has 12 divisors (see below), whose sum is σ = 1385958420. Its totient is φ = 351989376.

The previous prime is 747977471. The next prime is 747977501. The reversal of 747977492 is 294779747.

It can be written as a sum of positive squares in 2 ways, for example, as 257089156 + 490888336 = 16034^2 + 22156^2 .

It is a super-2 number, since 2×747977492² = 1118940657077220128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5499767 + ... + 5499902.

It is an arithmetic number, because the mean of its divisors is an integer number (115496535).

Almost surely, 2^747977492 is an apocalyptic number.

It is an amenable number.

747977492 is a deficient number, since it is larger than the sum of its proper divisors (637980928).

747977492 is a wasteful number, since it uses less digits than its factorization.

747977492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10999690 (or 10999688 counting only the distinct ones).

The product of its digits is 6223392, while the sum is 56.

The square root of 747977492 is about 27349.1771722661. The cubic root of 747977492 is about 907.7428632048.

The spelling of 747977492 in words is "seven hundred forty-seven million, nine hundred seventy-seven thousand, four hundred ninety-two".