981694379 has 8 divisors (see below), whose sum is σ = 990240768. Its totient is φ = 973161000.

The previous prime is 981694313. The next prime is 981694381. The reversal of 981694379 is 973496189.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981694379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981694309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204254 + ... + 209004.

It is an arithmetic number, because the mean of its divisors is an integer number (123780096).

Almost surely, 2^981694379 is an apocalyptic number.

981694379 is a deficient number, since it is larger than the sum of its proper divisors (8546389).

981694379 is a wasteful number, since it uses less digits than its factorization.

981694379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505.

The product of its digits is 2939328, while the sum is 56.

The square root of 981694379 is about 31332.0024735094. The cubic root of 981694379 is about 993.8605101368.

The spelling of 981694379 in words is "nine hundred eighty-one million, six hundred ninety-four thousand, three hundred seventy-nine".