909146997 has 60 divisors (see below), whose sum is σ = 1521091968. Its totient is φ = 536673600.

The previous prime is 909146993. The next prime is 909147011. The reversal of 909146997 is 799641909.

909146997 is a `hidden beast` number, since 9 + 0 + 91 + 469 + 97 = 666.

It is not a de Polignac number, because 909146997 - 2² = 909146993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909146993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1497468 + ... + 1498074.

Almost surely, 2^909146997 is an apocalyptic number.

It is an amenable number.

909146997 is a deficient number, since it is larger than the sum of its proper divisors (611944971).

909146997 is a wasteful number, since it uses less digits than its factorization.

909146997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 909146997 is about 30152.0645561792. The cubic root of 909146997 is about 968.7492282089.

The spelling of 909146997 in words is "nine hundred nine million, one hundred forty-six thousand, nine hundred ninety-seven".