999413493 has 32 divisors (see below), whose sum is σ = 1530700416. Its totient is φ = 574568448.

The previous prime is 999413431. The next prime is 999413533. The reversal of 999413493 is 394314999.

It is not a de Polignac number, because 999413493 - 2²² = 995219189 is a prime.

It is a super-2 number, since 2×999413493² = 1997654659980922098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999413893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85330 + ... + 96332.

It is an arithmetic number, because the mean of its divisors is an integer number (47834388).

Almost surely, 2^999413493 is an apocalyptic number.

It is an amenable number.

999413493 is a deficient number, since it is larger than the sum of its proper divisors (531286923).

999413493 is a wasteful number, since it uses less digits than its factorization.

999413493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11173.

The product of its digits is 944784, while the sum is 51.

The square root of 999413493 is about 31613.5017516250. The cubic root of 999413493 is about 999.8044594330.

The spelling of 999413493 in words is "nine hundred ninety-nine million, four hundred thirteen thousand, four hundred ninety-three".