499891401 has 24 divisors (see below), whose sum is σ = 735587840. Its totient is φ = 327045600.

The previous prime is 499891391. The next prime is 499891417. The reversal of 499891401 is 104198994.

It is not a de Polignac number, because 499891401 - 2⁹ = 499890889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (499891421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339096 + ... + 340566.

Almost surely, 2^499891401 is an apocalyptic number.

It is an amenable number.

499891401 is a deficient number, since it is larger than the sum of its proper divisors (235696439).

499891401 is a wasteful number, since it uses less digits than its factorization.

499891401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2154 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 499891401 is about 22358.2512956626. The cubic root of 499891401 is about 793.6430584343.

The spelling of 499891401 in words is "four hundred ninety-nine million, eight hundred ninety-one thousand, four hundred one".