971079749 has 2 divisors, whose sum is σ = 971079750. Its totient is φ = 971079748.

The previous prime is 971079673. The next prime is 971079779. The reversal of 971079749 is 947970179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964413025 + 6666724 = 31055^2 + 2582^2 .

It is a cyclic number.

It is not a de Polignac number, because 971079749 - 2²⁰ = 970031173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 971079749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971079779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485539874 + 485539875.

It is an arithmetic number, because the mean of its divisors is an integer number (485539875).

Almost surely, 2^971079749 is an apocalyptic number.

It is an amenable number.

971079749 is a deficient number, since it is larger than the sum of its proper divisors (1).

971079749 is an equidigital number, since it uses as much as digits as its factorization.

971079749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000188, while the sum is 53.

The square root of 971079749 is about 31162.1525090935. The cubic root of 971079749 is about 990.2654626005.

The spelling of 971079749 in words is "nine hundred seventy-one million, seventy-nine thousand, seven hundred forty-nine".