499999154 has 16 divisors (see below), whose sum is σ = 754891488. Its totient is φ = 248374272.

The previous prime is 499999153. The next prime is 499999211. The reversal of 499999154 is 451999994.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 499999093 and 499999102.

It is not an unprimeable number, because it can be changed into a prime (499999153) 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, 238997 + ... + 241079.

It is an arithmetic number, because the mean of its divisors is an integer number (47180718).

Almost surely, 2^499999154 is an apocalyptic number.

499999154 is a deficient number, since it is larger than the sum of its proper divisors (254892334).

499999154 is a wasteful number, since it uses less digits than its factorization.

499999154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809.

The product of its digits is 4723920, while the sum is 59.

The square root of 499999154 is about 22360.6608578548. The cubic root of 499999154 is about 793.7000783368.

The spelling of 499999154 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred fifty-four".