916031899 has 4 divisors (see below), whose sum is σ = 916773664. Its totient is φ = 915290136.

The previous prime is 916031891. The next prime is 916031917. The reversal of 916031899 is 998130619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998130619 = 17341 ⋅57559.

It is a cyclic number.

It is not a de Polignac number, because 916031899 - 2³ = 916031891 is a prime.

It is a super-2 number, since 2×916031899² = 1678228879971092402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916031891) 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, 369027 + ... + 371500.

It is an arithmetic number, because the mean of its divisors is an integer number (229193416).

Almost surely, 2^916031899 is an apocalyptic number.

916031899 is a deficient number, since it is larger than the sum of its proper divisors (741765).

916031899 is a wasteful number, since it uses less digits than its factorization.

916031899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741764.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 916031899 is about 30266.0188825686. The cubic root of 916031899 is about 971.1885027927.

The spelling of 916031899 in words is "nine hundred sixteen million, thirty-one thousand, eight hundred ninety-nine".