404977973 has 2 divisors, whose sum is σ = 404977974. Its totient is φ = 404977972.

The previous prime is 404977967. The next prime is 404978039. The reversal of 404977973 is 379779404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231739729 + 173238244 = 15223^2 + 13162^2 .

It is a cyclic number.

It is not a de Polignac number, because 404977973 - 2¹⁴ = 404961589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404977933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202488986 + 202488987.

It is an arithmetic number, because the mean of its divisors is an integer number (202488987).

Almost surely, 2^404977973 is an apocalyptic number.

It is an amenable number.

404977973 is a deficient number, since it is larger than the sum of its proper divisors (1).

404977973 is an equidigital number, since it uses as much as digits as its factorization.

404977973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The square root of 404977973 is about 20124.0645248419. The cubic root of 404977973 is about 739.8502089070.

The spelling of 404977973 in words is "four hundred four million, nine hundred seventy-seven thousand, nine hundred seventy-three".