54399790 has 8 divisors (see below), whose sum is σ = 97919640. Its totient is φ = 21759912.

The previous prime is 54399781. The next prime is 54399797. The reversal of 54399790 is 9799345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 54399790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54399797) 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, 2719980 + ... + 2719999.

It is an arithmetic number, because the mean of its divisors is an integer number (12239955).

Almost surely, 2^54399790 is an apocalyptic number.

54399790 is a deficient number, since it is larger than the sum of its proper divisors (43519850).

54399790 is a wasteful number, since it uses less digits than its factorization.

54399790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5439986.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 54399790 is about 7375.6213297593. The cubic root of 54399790 is about 378.9068073092.

The spelling of 54399790 in words is "fifty-four million, three hundred ninety-nine thousand, seven hundred ninety".