842892981 has 16 divisors (see below), whose sum is σ = 1296881664. Its totient is φ = 476975664.

The previous prime is 842892977. The next prime is 842893003. The reversal of 842892981 is 189298248.

It is a happy number.

It is not a de Polignac number, because 842892981 - 2² = 842892977 is a prime.

It is a super-2 number, since 2×842892981² = 1420937154838132722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842892931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192681 + ... + 197006.

It is an arithmetic number, because the mean of its divisors is an integer number (81055104).

Almost surely, 2^842892981 is an apocalyptic number.

It is an amenable number.

842892981 is a deficient number, since it is larger than the sum of its proper divisors (453988683).

842892981 is a wasteful number, since it uses less digits than its factorization.

842892981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389800.

The product of its digits is 663552, while the sum is 51.

The square root of 842892981 is about 29032.6192583446. The cubic root of 842892981 is about 944.6207453262.

The spelling of 842892981 in words is "eight hundred forty-two million, eight hundred ninety-two thousand, nine hundred eighty-one".