991134476 has 24 divisors (see below), whose sum is σ = 1839846960. Its totient is φ = 465569792.

The previous prime is 991134439. The next prime is 991134491. The reversal of 991134476 is 674431199.

It is a super-3 number, since 3×991134476³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25340 + ... + 51228.

It is an arithmetic number, because the mean of its divisors is an integer number (76660290).

Almost surely, 2^991134476 is an apocalyptic number.

It is an amenable number.

991134476 is a deficient number, since it is larger than the sum of its proper divisors (848712484).

991134476 is a wasteful number, since it uses less digits than its factorization.

991134476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26473 (or 26471 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 991134476 is about 31482.2882904023. The cubic root of 991134476 is about 997.0360490073.

The spelling of 991134476 in words is "nine hundred ninety-one million, one hundred thirty-four thousand, four hundred seventy-six".