39464603649 has 15 divisors (see below), whose sum is σ = 58955967763. Its totient is φ = 26308543824.

The previous prime is 39464603621. The next prime is 39464603653. The reversal of 39464603649 is 94630646493.

The square root of 39464603649 is 198657.

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., 38265228225 + 1199375424 = 195615^2 + 34632^2 .

It is not a de Polignac number, because 39464603649 - 2²¹ = 39462506497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39464603595 and 39464603604.

It is not an unprimeable number, because it can be changed into a prime (39464602649) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1776877 + ... + 1798949.

Almost surely, 2^39464603649 is an apocalyptic number.

39464603649 is the 198657-th square number.

39464603649 is the 99329-th centered octagonal number.

It is an amenable number.

39464603649 is a deficient number, since it is larger than the sum of its proper divisors (19491364114).

39464603649 is an frugal number, since it uses more digits than its factorization.

39464603649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44158 (or 22076 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 54.

The spelling of 39464603649 in words is "thirty-nine billion, four hundred sixty-four million, six hundred three thousand, six hundred forty-nine".