54400739 has 4 divisors (see below), whose sum is σ = 54415656. Its totient is φ = 54385824.

The previous prime is 54400733. The next prime is 54400741. The reversal of 54400739 is 93700445.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54400739 is a prime.

It is a super-2 number, since 2×54400739² = 5918880807492242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54400733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2072 + ... + 10634.

It is an arithmetic number, because the mean of its divisors is an integer number (13603914).

Almost surely, 2^54400739 is an apocalyptic number.

54400739 is a deficient number, since it is larger than the sum of its proper divisors (14917).

54400739 is an equidigital number, since it uses as much as digits as its factorization.

54400739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14916.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 54400739 is about 7375.6856630418. The cubic root of 54400739 is about 378.9090106294.

The spelling of 54400739 in words is "fifty-four million, four hundred thousand, seven hundred thirty-nine".