916870949 has 2 divisors, whose sum is σ = 916870950. Its totient is φ = 916870948.

The previous prime is 916870921. The next prime is 916870963. The reversal of 916870949 is 949078619.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 910530625 + 6340324 = 30175^2 + 2518^2 .

It is a cyclic number.

It is not a de Polignac number, because 916870949 - 2²⁰ = 915822373 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 916870949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (916879949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458435474 + 458435475.

It is an arithmetic number, because the mean of its divisors is an integer number (458435475).

Almost surely, 2^916870949 is an apocalyptic number.

It is an amenable number.

916870949 is a deficient number, since it is larger than the sum of its proper divisors (1).

916870949 is an equidigital number, since it uses as much as digits as its factorization.

916870949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 916870949 is about 30279.8769647434. The cubic root of 916870949 is about 971.4849360801.

The spelling of 916870949 in words is "nine hundred sixteen million, eight hundred seventy thousand, nine hundred forty-nine".