977408449 has 2 divisors, whose sum is σ = 977408450. Its totient is φ = 977408448.

The previous prime is 977408401. The next prime is 977408459. The reversal of 977408449 is 944804779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969388225 + 8020224 = 31135^2 + 2832^2 .

It is a cyclic number.

It is not a de Polignac number, because 977408449 - 2⁷ = 977408321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 977408396 and 977408405.

It is not a weakly prime, because it can be changed into another prime (977408459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488704224 + 488704225.

It is an arithmetic number, because the mean of its divisors is an integer number (488704225).

Almost surely, 2^977408449 is an apocalyptic number.

It is an amenable number.

977408449 is a deficient number, since it is larger than the sum of its proper divisors (1).

977408449 is an equidigital number, since it uses as much as digits as its factorization.

977408449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 977408449 is about 31263.5322540496. The cubic root of 977408449 is about 992.4120516705.

The spelling of 977408449 in words is "nine hundred seventy-seven million, four hundred eight thousand, four hundred forty-nine".