997859476 has 12 divisors (see below), whose sum is σ = 1788845940. Its totient is φ = 486760640.

The previous prime is 997859459. The next prime is 997859477. The reversal of 997859476 is 674958799.

It can be written as a sum of positive squares in 2 ways, for example, as 203747076 + 794112400 = 14274^2 + 28180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997859477) 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, 3042091 + ... + 3042418.

It is an arithmetic number, because the mean of its divisors is an integer number (149070495).

Almost surely, 2^997859476 is an apocalyptic number.

It is an amenable number.

997859476 is a deficient number, since it is larger than the sum of its proper divisors (790986464).

997859476 is a wasteful number, since it uses less digits than its factorization.

997859476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084554 (or 6084552 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 64.

The square root of 997859476 is about 31588.9138148180. The cubic root of 997859476 is about 999.2859823001.

The spelling of 997859476 in words is "nine hundred ninety-seven million, eight hundred fifty-nine thousand, four hundred seventy-six".