914888991 has 4 divisors (see below), whose sum is σ = 1219851992. Its totient is φ = 609925992.

The previous prime is 914888977. The next prime is 914889043. The reversal of 914888991 is 199888419.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 914888991 - 2⁶ = 914888927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (914888921) 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, 152481496 + ... + 152481501.

It is an arithmetic number, because the mean of its divisors is an integer number (304962998).

Almost surely, 2^914888991 is an apocalyptic number.

914888991 is a deficient number, since it is larger than the sum of its proper divisors (304963001).

914888991 is a wasteful number, since it uses less digits than its factorization.

914888991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304963000.

The product of its digits is 1492992, while the sum is 57.

The square root of 914888991 is about 30247.1319466822. The cubic root of 914888991 is about 970.7844262313.

The spelling of 914888991 in words is "nine hundred fourteen million, eight hundred eighty-eight thousand, nine hundred ninety-one".