27964739439 has 144 divisors (see below), whose sum is σ = 51986288640. Its totient is φ = 14168494080.

The previous prime is 27964739417. The next prime is 27964739449. The reversal of 27964739439 is 93493746972.

27964739439 is a `hidden beast` number, since 2 + 79 + 6 + 473 + 94 + 3 + 9 = 666.

It is not a de Polignac number, because 27964739439 - 2⁸ = 27964739183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27964739449) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 63700782 + ... + 63701220.

Almost surely, 2^27964739439 is an apocalyptic number.

27964739439 is a deficient number, since it is larger than the sum of its proper divisors (24021549201).

27964739439 is a wasteful number, since it uses less digits than its factorization.

27964739439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 686 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 63.

The spelling of 27964739439 in words is "twenty-seven billion, nine hundred sixty-four million, seven hundred thirty-nine thousand, four hundred thirty-nine".