54399469 has 4 divisors (see below), whose sum is σ = 54419580. Its totient is φ = 54379360.

The previous prime is 54399467. The next prime is 54399487. The reversal of 54399469 is 96499345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18818244 + 35581225 = 4338^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 54399469 - 2¹ = 54399467 is a prime.

It is a super-2 number, since 2×54399469² = 5918604454963922, which 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 (54399461) 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, 5224 + ... + 11665.

It is an arithmetic number, because the mean of its divisors is an integer number (13604895).

Almost surely, 2^54399469 is an apocalyptic number.

It is an amenable number.

54399469 is a deficient number, since it is larger than the sum of its proper divisors (20111).

54399469 is a wasteful number, since it uses less digits than its factorization.

54399469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20110.

The product of its digits is 1049760, while the sum is 49.

The square root of 54399469 is about 7375.5995688486. The cubic root of 54399469 is about 378.9060620286.

The spelling of 54399469 in words is "fifty-four million, three hundred ninety-nine thousand, four hundred sixty-nine".