999474456 has 64 divisors (see below), whose sum is σ = 2576661120. Its totient is φ = 322882560.

The previous prime is 999474439. The next prime is 999474521. The reversal of 999474456 is 654474999.

It is a super-3 number, since 3×999474456³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999474396 and 999474405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131496 + ... + 138888.

It is an arithmetic number, because the mean of its divisors is an integer number (40260330).

Almost surely, 2^999474456 is an apocalyptic number.

999474456 is the 16899-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999474456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288330560).

999474456 is an abundant number, since it is smaller than the sum of its proper divisors (1577186664).

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

999474456 is a wasteful number, since it uses less digits than its factorization.

999474456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7576 (or 7572 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 57.

The square root of 999474456 is about 31614.4659293811. The cubic root of 999474456 is about 999.8247879692.

The spelling of 999474456 in words is "nine hundred ninety-nine million, four hundred seventy-four thousand, four hundred fifty-six".