978689041 has 4 divisors (see below), whose sum is σ = 1067660784. Its totient is φ = 889717300.

The previous prime is 978689009. The next prime is 978689053. The reversal of 978689041 is 140986879.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140986879 = 11 ⋅12816989.

It is a cyclic number.

It is not a de Polignac number, because 978689041 - 2⁵ = 978689009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 978689041.

It is not an unprimeable number, because it can be changed into a prime (978639041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44485855 + ... + 44485876.

It is an arithmetic number, because the mean of its divisors is an integer number (266915196).

Almost surely, 2^978689041 is an apocalyptic number.

It is an amenable number.

978689041 is a deficient number, since it is larger than the sum of its proper divisors (88971743).

978689041 is a wasteful number, since it uses less digits than its factorization.

978689041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88971742.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 978689041 is about 31284.0061533046. The cubic root of 978689041 is about 992.8452790516.

The spelling of 978689041 in words is "nine hundred seventy-eight million, six hundred eighty-nine thousand, forty-one".