991269546 has 32 divisors (see below), whose sum is σ = 2041200000. Its totient is φ = 320728320.

The previous prime is 991269529. The next prime is 991269599. The reversal of 991269546 is 645962199.

991269546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×991269546² = 1965230625654092232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38830 + ... + 59078.

It is an arithmetic number, because the mean of its divisors is an integer number (63787500).

Almost surely, 2^991269546 is an apocalyptic number.

991269546 is an abundant number, since it is smaller than the sum of its proper divisors (1049930454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

991269546 is a wasteful number, since it uses less digits than its factorization.

991269546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20494.

The product of its digits is 1049760, while the sum is 51.

The square root of 991269546 is about 31484.4333917573. The cubic root of 991269546 is about 997.0813383686.

The spelling of 991269546 in words is "nine hundred ninety-one million, two hundred sixty-nine thousand, five hundred forty-six".