997469424 has 160 divisors (see below), whose sum is σ = 3464778240. Its totient is φ = 268213248.

The previous prime is 997469383. The next prime is 997469453. The reversal of 997469424 is 424964799.

997469424 is a `hidden beast` number, since 99 + 74 + 69 + 424 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41707 + ... + 61109.

It is an arithmetic number, because the mean of its divisors is an integer number (21654864).

Almost surely, 2^997469424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997469424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732389120).

997469424 is an abundant number, since it is smaller than the sum of its proper divisors (2467308816).

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

997469424 is a wasteful number, since it uses less digits than its factorization.

997469424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19444 (or 19432 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 997469424 is about 31582.7393365427. The cubic root of 997469424 is about 999.1557621297.

The spelling of 997469424 in words is "nine hundred ninety-seven million, four hundred sixty-nine thousand, four hundred twenty-four".