5540404399 has 2 divisors, whose sum is σ = 5540404400. Its totient is φ = 5540404398.

The previous prime is 5540404391. The next prime is 5540404421. The reversal of 5540404399 is 9934040455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5540404399 - 2³ = 5540404391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5540404391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770202199 + 2770202200.

It is an arithmetic number, because the mean of its divisors is an integer number (2770202200).

Almost surely, 2^5540404399 is an apocalyptic number.

5540404399 is a deficient number, since it is larger than the sum of its proper divisors (1).

5540404399 is an equidigital number, since it uses as much as digits as its factorization.

5540404399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 5540404399 is about 74433.8928110038. The cubic root of 5540404399 is about 1769.4860988003.

The spelling of 5540404399 in words is "five billion, five hundred forty million, four hundred four thousand, three hundred ninety-nine".