54140399 has 2 divisors, whose sum is σ = 54140400. Its totient is φ = 54140398.

The previous prime is 54140389. The next prime is 54140407. The reversal of 54140399 is 99304145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54140399 - 2⁸ = 54140143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54140369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27070199 + 27070200.

It is an arithmetic number, because the mean of its divisors is an integer number (27070200).

Almost surely, 2^54140399 is an apocalyptic number.

54140399 is a deficient number, since it is larger than the sum of its proper divisors (1).

54140399 is an equidigital number, since it uses as much as digits as its factorization.

54140399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 54140399 is about 7358.0159689960. The cubic root of 54140399 is about 378.3036086194.

The spelling of 54140399 in words is "fifty-four million, one hundred forty thousand, three hundred ninety-nine".