501440899 has 2 divisors, whose sum is σ = 501440900. Its totient is φ = 501440898.

The previous prime is 501440873. The next prime is 501440911. The reversal of 501440899 is 998044105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501440899 - 2¹⁷ = 501309827 is a prime.

It is not a weakly prime, because it can be changed into another prime (501440809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250720449 + 250720450.

It is an arithmetic number, because the mean of its divisors is an integer number (250720450).

Almost surely, 2^501440899 is an apocalyptic number.

501440899 is a deficient number, since it is larger than the sum of its proper divisors (1).

501440899 is an equidigital number, since it uses as much as digits as its factorization.

501440899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 501440899 is about 22392.8760770027. The cubic root of 501440899 is about 794.4622229625.

The spelling of 501440899 in words is "five hundred one million, four hundred forty thousand, eight hundred ninety-nine".