997395479 has 8 divisors (see below), whose sum is σ = 1034035632. Its totient is φ = 961341760.

The previous prime is 997395439. The next prime is 997395527. The reversal of 997395479 is 974593799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997395479 - 2¹⁶ = 997329943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997395439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143144 + ... + 149949.

It is an arithmetic number, because the mean of its divisors is an integer number (129254454).

Almost surely, 2^997395479 is an apocalyptic number.

997395479 is a deficient number, since it is larger than the sum of its proper divisors (36640153).

997395479 is a wasteful number, since it uses less digits than its factorization.

997395479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293217.

The product of its digits is 19289340, while the sum is 62.

The square root of 997395479 is about 31581.5686595837. The cubic root of 997395479 is about 999.1310715153.

The spelling of 997395479 in words is "nine hundred ninety-seven million, three hundred ninety-five thousand, four hundred seventy-nine".