39474934489 has 9 divisors (see below), whose sum is σ = 41665895967. Its totient is φ = 37393730064.

The previous prime is 39474934441. The next prime is 39474934501. The reversal of 39474934489 is 98443947493.

The square root of 39474934489 is 198683.

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

39474934489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35703992025 + 3770942464 = 188955^2 + 61408^2 .

It is not a de Polignac number, because 39474934489 - 2¹³ = 39474926297 is a prime.

It is a super-2 number, since 2×39474934489² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39474934489.

It is not an unprimeable number, because it can be changed into a prime (39474914489) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3769749 + ... + 3780205.

Almost surely, 2^39474934489 is an apocalyptic number.

39474934489 is the 198683-rd square number.

39474934489 is the 99342-nd centered octagonal number.

It is an amenable number.

39474934489 is a deficient number, since it is larger than the sum of its proper divisors (2190961478).

39474934489 is an frugal number, since it uses more digits than its factorization.

39474934489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20952 (or 10476 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 64.

Multiplying 39474934489 by its sum of digits (64), we get a square (2526395807296 = 1589464²).

The spelling of 39474934489 in words is "thirty-nine billion, four hundred seventy-four million, nine hundred thirty-four thousand, four hundred eighty-nine".