981440372 has 24 divisors (see below), whose sum is σ = 1875855072. Its totient is φ = 445586400.

The previous prime is 981440347. The next prime is 981440393. The reversal of 981440372 is 273044189.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26222 + ... + 51482.

It is an arithmetic number, because the mean of its divisors is an integer number (78160628).

Almost surely, 2^981440372 is an apocalyptic number.

It is an amenable number.

981440372 is a deficient number, since it is larger than the sum of its proper divisors (894414700).

981440372 is a wasteful number, since it uses less digits than its factorization.

981440372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26159 (or 26157 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 981440372 is about 31327.9487359131. The cubic root of 981440372 is about 993.7747844405.

The spelling of 981440372 in words is "nine hundred eighty-one million, four hundred forty thousand, three hundred seventy-two".