981892 has 6 divisors (see below), whose sum is σ = 1718318. Its totient is φ = 490944.

The previous prime is 981889. The next prime is 981913. The reversal of 981892 is 298189.

It can be written as a sum of positive squares in only one way, i.e., 614656 + 367236 = 784^2 + 606^2 .

It is a super-2 number, since 2×981892² = 1928223799328, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122733 + ... + 122740.

2⁹⁸¹⁸⁹² is an apocalyptic number.

It is an amenable number.

981892 is a deficient number, since it is larger than the sum of its proper divisors (736426).

981892 is a wasteful number, since it uses less digits than its factorization.

981892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245477 (or 245475 counting only the distinct ones).

The product of its digits is 10368, while the sum is 37.

The square root of 981892 is about 990.9046371877. The cubic root of 981892 is about 99.3927195701.

The spelling of 981892 in words is "nine hundred eighty-one thousand, eight hundred ninety-two".