39777111364 has 9 divisors (see below), whose sum is σ = 69610642941. Its totient is φ = 19888356240.

The previous prime is 39777111349. The next prime is 39777111383. The reversal of 39777111364 is 46311177793.

It is a happy number.

The square root of 39777111364 is 199442.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15739709764 + 24037401600 = 125458^2 + 155040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 349024 + ... + 448744.

Almost surely, 2^39777111364 is an apocalyptic number.

39777111364 is the 199442-nd square number.

It is an amenable number.

39777111364 is a deficient number, since it is larger than the sum of its proper divisors (29833531577).

39777111364 is an frugal number, since it uses more digits than its factorization.

39777111364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199446 (or 99723 counting only the distinct ones).

The product of its digits is 666792, while the sum is 49.

Multiplying 39777111364 by its sum of digits (49), we get a square (1949078456836 = 1396094²).

The spelling of 39777111364 in words is "thirty-nine billion, seven hundred seventy-seven million, one hundred eleven thousand, three hundred sixty-four".