499552391 has 8 divisors (see below), whose sum is σ = 538409424. Its totient is φ = 460756800.

The previous prime is 499552381. The next prime is 499552411. The reversal of 499552391 is 193255994.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499552391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499552301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2291 + ... + 31691.

It is an arithmetic number, because the mean of its divisors is an integer number (67301178).

Almost surely, 2^499552391 is an apocalyptic number.

499552391 is a deficient number, since it is larger than the sum of its proper divisors (38857033).

499552391 is a wasteful number, since it uses less digits than its factorization.

499552391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30721.

The product of its digits is 437400, while the sum is 47.

The square root of 499552391 is about 22350.6686924575. The cubic root of 499552391 is about 793.4636102738.

The spelling of 499552391 in words is "four hundred ninety-nine million, five hundred fifty-two thousand, three hundred ninety-one".