999310249 has 4 divisors (see below), whose sum is σ = 1142068864. Its totient is φ = 856551636.

The previous prime is 999310229. The next prime is 999310253. The reversal of 999310249 is 942013999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 999310249 - 2⁷ = 999310121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999310199 and 999310208.

It is not an unprimeable number, because it can be changed into a prime (999310219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71379297 + ... + 71379310.

It is an arithmetic number, because the mean of its divisors is an integer number (285517216).

Almost surely, 2^999310249 is an apocalyptic number.

It is an amenable number.

999310249 is a deficient number, since it is larger than the sum of its proper divisors (142758615).

999310249 is a wasteful number, since it uses less digits than its factorization.

999310249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142758614.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 999310249 is about 31611.8687995506. The cubic root of 999310249 is about 999.7700301179.

The spelling of 999310249 in words is "nine hundred ninety-nine million, three hundred ten thousand, two hundred forty-nine".