999860376 has 64 divisors (see below), whose sum is σ = 2599200000. Its totient is φ = 320132736.

The previous prime is 999860369. The next prime is 999860429. The reversal of 999860376 is 673068999.

It is a super-2 number, since 2×999860376² = 1999441542989722752, which contains 22 as substring.

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, 134895 + ... + 142113.

It is an arithmetic number, because the mean of its divisors is an integer number (40612500).

Almost surely, 2^999860376 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 999860376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299600000).

999860376 is an abundant number, since it is smaller than the sum of its proper divisors (1599339624).

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

999860376 is a wasteful number, since it uses less digits than its factorization.

999860376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456 (or 7452 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 57.

The square root of 999860376 is about 31620.5688753381. The cubic root of 999860376 is about 999.9534565004.

The spelling of 999860376 in words is "nine hundred ninety-nine million, eight hundred sixty thousand, three hundred seventy-six".