979509381401 has 2 divisors, whose sum is σ = 979509381402. Its totient is φ = 979509381400.

The previous prime is 979509381373. The next prime is 979509381449. The reversal of 979509381401 is 104183905979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975867379600 + 3642001801 = 987860^2 + 60349^2 .

It is a cyclic number.

It is not a de Polignac number, because 979509381401 - 2⁶ = 979509381337 is a prime.

It is not a weakly prime, because it can be changed into another prime (979509381491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489754690700 + 489754690701.

It is an arithmetic number, because the mean of its divisors is an integer number (489754690701).

Almost surely, 2^979509381401 is an apocalyptic number.

It is an amenable number.

979509381401 is a deficient number, since it is larger than the sum of its proper divisors (1).

979509381401 is an equidigital number, since it uses as much as digits as its factorization.

979509381401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 979509381401 in words is "nine hundred seventy-nine billion, five hundred nine million, three hundred eighty-one thousand, four hundred one".