997391034 has 12 divisors (see below), whose sum is σ = 2161013946. Its totient is φ = 332463672.

The previous prime is 997391033. The next prime is 997391039. The reversal of 997391034 is 430193799.

It can be written as a sum of positive squares in only one way, i.e., 802872225 + 194518809 = 28335^2 + 13947^2 .

It is not an unprimeable number, because it can be changed into a prime (997391033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27705289 + ... + 27705324.

Almost surely, 2^997391034 is an apocalyptic number.

997391034 is an abundant number, since it is smaller than the sum of its proper divisors (1163622912).

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

997391034 is a wasteful number, since it uses less digits than its factorization.

997391034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55410621 (or 55410618 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 997391034 is about 31581.4982861802. The cubic root of 997391034 is about 999.1295872682.

The spelling of 997391034 in words is "nine hundred ninety-seven million, three hundred ninety-one thousand, thirty-four".