997059408 has 40 divisors (see below), whose sum is σ = 2619400800. Its totient is φ = 326719104.

The previous prime is 997059389. The next prime is 997059419. The reversal of 997059408 is 804950799.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173203 + ... + 178866.

It is an arithmetic number, because the mean of its divisors is an integer number (65485020).

Almost surely, 2^997059408 is an apocalyptic number.

It is an amenable number.

997059408 is an abundant number, since it is smaller than the sum of its proper divisors (1622341392).

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

997059408 is a wasteful number, since it uses less digits than its factorization.

997059408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352139 (or 352133 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 997059408 is about 31576.2475287992. The cubic root of 997059408 is about 999.0188403072.

It can be divided in two parts, 9970 and 59408, that added together give a triangular number (69378 = T₃₇₂).

The spelling of 997059408 in words is "nine hundred ninety-seven million, fifty-nine thousand, four hundred eight".