997719411 has 32 divisors (see below), whose sum is σ = 1471421952. Its totient is φ = 597461760.

The previous prime is 997719403. The next prime is 997719419. The reversal of 997719411 is 114917799.

It is an interprime number because it is at equal distance from previous prime (997719403) and next prime (997719419).

It is not a de Polignac number, because 997719411 - 2³ = 997719403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997719419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520591 + ... + 522503.

It is an arithmetic number, because the mean of its divisors is an integer number (45981936).

Almost surely, 2^997719411 is an apocalyptic number.

997719411 is a deficient number, since it is larger than the sum of its proper divisors (473702541).

997719411 is a wasteful number, since it uses less digits than its factorization.

997719411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283.

The product of its digits is 142884, while the sum is 48.

The square root of 997719411 is about 31586.6967408749. The cubic root of 997719411 is about 999.2392250349.

The spelling of 997719411 in words is "nine hundred ninety-seven million, seven hundred nineteen thousand, four hundred eleven".