899691249 has 32 divisors (see below), whose sum is σ = 1321205760. Its totient is φ = 542505600.

The previous prime is 899691239. The next prime is 899691251. The reversal of 899691249 is 942196998.

It is not a de Polignac number, because 899691249 - 2⁵ = 899691217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (899691229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105744 + ... + 113934.

It is an arithmetic number, because the mean of its divisors is an integer number (41287680).

Almost surely, 2^899691249 is an apocalyptic number.

It is an amenable number.

899691249 is a deficient number, since it is larger than the sum of its proper divisors (421514511).

899691249 is a wasteful number, since it uses less digits than its factorization.

899691249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8301.

The product of its digits is 2519424, while the sum is 57.

The square root of 899691249 is about 29994.8537085947. The cubic root of 899691249 is about 965.3789661214.

The spelling of 899691249 in words is "eight hundred ninety-nine million, six hundred ninety-one thousand, two hundred forty-nine".