978139341 has 8 divisors (see below), whose sum is σ = 1449095360. Its totient is φ = 652092876.

The previous prime is 978139339. The next prime is 978139391. The reversal of 978139341 is 143931879.

It is not a de Polignac number, because 978139341 - 2¹ = 978139339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978139391) 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, 18113665 + ... + 18113718.

It is an arithmetic number, because the mean of its divisors is an integer number (181136920).

Almost surely, 2^978139341 is an apocalyptic number.

It is an amenable number.

978139341 is a deficient number, since it is larger than the sum of its proper divisors (470956019).

978139341 is a wasteful number, since it uses less digits than its factorization.

978139341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36227392 (or 36227386 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 978139341 is about 31275.2192798068. The cubic root of 978139341 is about 992.6593605289.

The spelling of 978139341 in words is "nine hundred seventy-eight million, one hundred thirty-nine thousand, three hundred forty-one".