999617472 has 336 divisors, whose sum is σ = 3461552640. Its totient is φ = 269789184.

The previous prime is 999617461. The next prime is 999617483. The reversal of 999617472 is 274716999.

It is an interprime number because it is at equal distance from previous prime (999617461) and next prime (999617483).

It is a tau number, because it is divible by the number of its divisors (336).

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 47 ways as a sum of consecutive naturals, for example, 9704973 + ... + 9705075.

It is an arithmetic number, because the mean of its divisors is an integer number (10302240).

Almost surely, 2^999617472 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 999617472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1730776320).

999617472 is an abundant number, since it is smaller than the sum of its proper divisors (2461935168).

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

999617472 is a wasteful number, since it uses less digits than its factorization.

999617472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 227 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 999617472 is about 31616.7277244183. The cubic root of 999617472 is about 999.8724744046.

The spelling of 999617472 in words is "nine hundred ninety-nine million, six hundred seventeen thousand, four hundred seventy-two".