997017402 has 8 divisors (see below), whose sum is σ = 1994034816. Its totient is φ = 332339132.

The previous prime is 997017383. The next prime is 997017421. The reversal of 997017402 is 204710799.

It is an interprime number because it is at equal distance from previous prime (997017383) and next prime (997017421).

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

997017402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83084778 + ... + 83084789.

It is an arithmetic number, because the mean of its divisors is an integer number (249254352).

Almost surely, 2^997017402 is an apocalyptic number.

997017402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

997017402 is a wasteful number, since it uses less digits than its factorization.

997017402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166169572.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 997017402 is about 31575.5823699263. The cubic root of 997017402 is about 999.0048105933.

It can be divided in two parts, 9970 and 17402, that added together give a palindrome (27372).

The spelling of 997017402 in words is "nine hundred ninety-seven million, seventeen thousand, four hundred two".