999440632 has 8 divisors (see below), whose sum is σ = 1873951200. Its totient is φ = 499720312.

The previous prime is 999440627. The next prime is 999440639. The reversal of 999440632 is 236044999.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999440639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62465032 + ... + 62465047.

It is an arithmetic number, because the mean of its divisors is an integer number (234243900).

Almost surely, 2^999440632 is an apocalyptic number.

It is an amenable number.

999440632 is a deficient number, since it is larger than the sum of its proper divisors (874510568).

999440632 is a wasteful number, since it uses less digits than its factorization.

999440632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124930085 (or 124930081 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 999440632 is about 31613.9309798703. The cubic root of 999440632 is about 999.8135092234.

The spelling of 999440632 in words is "nine hundred ninety-nine million, four hundred forty thousand, six hundred thirty-two".