999413599 has 2 divisors, whose sum is σ = 999413600. Its totient is φ = 999413598.

The previous prime is 999413587. The next prime is 999413627. The reversal of 999413599 is 995314999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999413599 - 2¹⁷ = 999282527 is a prime.

It is a super-2 number, since 2×999413599² = 1997655083732265602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999413539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499706799 + 499706800.

It is an arithmetic number, because the mean of its divisors is an integer number (499706800).

Almost surely, 2^999413599 is an apocalyptic number.

999413599 is a deficient number, since it is larger than the sum of its proper divisors (1).

999413599 is an equidigital number, since it uses as much as digits as its factorization.

999413599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3542940, while the sum is 58.

The square root of 999413599 is about 31613.5034281239. The cubic root of 999413599 is about 999.8044947802.

The spelling of 999413599 in words is "nine hundred ninety-nine million, four hundred thirteen thousand, five hundred ninety-nine".