54399499893 has 6 divisors (see below), whose sum is σ = 78577055414. Its totient is φ = 36266333256.

The previous prime is 54399499883. The next prime is 54399499897. The reversal of 54399499893 is 39899499345.

54399499893 is a `hidden beast` number, since 5 + 43 + 9 + 9 + 499 + 8 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40762398609 + 13637101284 = 201897^2 + 116778^2 .

It is not a de Polignac number, because 54399499893 - 2¹³ = 54399491701 is a prime.

It is a super-2 number, since 2×54399499893² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54399499897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3022194430 + ... + 3022194447.

Almost surely, 2^54399499893 is an apocalyptic number.

It is an amenable number.

54399499893 is a deficient number, since it is larger than the sum of its proper divisors (24177555521).

54399499893 is a wasteful number, since it uses less digits than its factorization.

54399499893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044388883 (or 6044388880 counting only the distinct ones).

The product of its digits is 340122240, while the sum is 72.

The spelling of 54399499893 in words is "fifty-four billion, three hundred ninety-nine million, four hundred ninety-nine thousand, eight hundred ninety-three".