891614839 has 12 divisors (see below), whose sum is σ = 926690752. Its totient is φ = 857865480.

The previous prime is 891614819. The next prime is 891614891. The reversal of 891614839 is 938416198.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 891614839 - 2⁵ = 891614807 is a prime.

It is a super-2 number, since 2×891614839² = 1589954042249991842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 891614792 and 891614801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891614819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5153757 + ... + 5153929.

Almost surely, 2^891614839 is an apocalyptic number.

891614839 is a deficient number, since it is larger than the sum of its proper divisors (35075913).

891614839 is an frugal number, since it uses more digits than its factorization.

891614839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 204 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 891614839 is about 29859.9202778574. The cubic root of 891614839 is about 962.4815856150.

The spelling of 891614839 in words is "eight hundred ninety-one million, six hundred fourteen thousand, eight hundred thirty-nine".