499999401 has 24 divisors (see below), whose sum is σ = 796015584. Its totient is φ = 299900160.

The previous prime is 499999397. The next prime is 499999417. The reversal of 499999401 is 104999994.

It is not a de Polignac number, because 499999401 - 2² = 499999397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499999441) 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, 16431 + ... + 35636.

It is an arithmetic number, because the mean of its divisors is an integer number (33167316).

Almost surely, 2^499999401 is an apocalyptic number.

It is an amenable number.

499999401 is a deficient number, since it is larger than the sum of its proper divisors (296016183).

499999401 is a wasteful number, since it uses less digits than its factorization.

499999401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52181 (or 52178 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 499999401 is about 22360.6663809467. Note that the first 3 decimals coincide. The cubic root of 499999401 is about 793.7002090329.

The spelling of 499999401 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred one".