981442894 has 8 divisors (see below), whose sum is σ = 1472859648. Its totient is φ = 490489680.

The previous prime is 981442883. The next prime is 981442901. The reversal of 981442894 is 498244189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110542 + ... + 119089.

It is an arithmetic number, because the mean of its divisors is an integer number (184107456).

Almost surely, 2^981442894 is an apocalyptic number.

981442894 is a deficient number, since it is larger than the sum of its proper divisors (491416754).

981442894 is a wasteful number, since it uses less digits than its factorization.

981442894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231770.

The product of its digits is 663552, while the sum is 49.

The square root of 981442894 is about 31327.9889874853. The cubic root of 981442894 is about 993.7756356716.

The spelling of 981442894 in words is "nine hundred eighty-one million, four hundred forty-two thousand, eight hundred ninety-four".