979807943 has 2 divisors, whose sum is σ = 979807944. Its totient is φ = 979807942.

The previous prime is 979807931. The next prime is 979807967. The reversal of 979807943 is 349708979.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 979807943 - 2⁶ = 979807879 is a prime.

It is a super-3 number, since 3×979807943³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979807973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489903971 + 489903972.

It is an arithmetic number, because the mean of its divisors is an integer number (489903972).

Almost surely, 2^979807943 is an apocalyptic number.

979807943 is a deficient number, since it is larger than the sum of its proper divisors (1).

979807943 is an equidigital number, since it uses as much as digits as its factorization.

979807943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 979807943 is about 31301.8840167808. The cubic root of 979807943 is about 993.2234970693.

The spelling of 979807943 in words is "nine hundred seventy-nine million, eight hundred seven thousand, nine hundred forty-three".