969857880949 has 2 divisors, whose sum is σ = 969857880950. Its totient is φ = 969857880948.

The previous prime is 969857880941. The next prime is 969857880983. The reversal of 969857880949 is 949088758969.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 951684144849 + 18173736100 = 975543^2 + 134810^2 .

It is a cyclic number.

It is not a de Polignac number, because 969857880949 - 2³ = 969857880941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969857880941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484928940474 + 484928940475.

It is an arithmetic number, because the mean of its divisors is an integer number (484928940475).

Almost surely, 2^969857880949 is an apocalyptic number.

It is an amenable number.

969857880949 is a deficient number, since it is larger than the sum of its proper divisors (1).

969857880949 is an equidigital number, since it uses as much as digits as its factorization.

969857880949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2821754880, while the sum is 82.

The spelling of 969857880949 in words is "nine hundred sixty-nine billion, eight hundred fifty-seven million, eight hundred eighty thousand, nine hundred forty-nine".