404963969 has 2 divisors, whose sum is σ = 404963970. Its totient is φ = 404963968.

The previous prime is 404963957. The next prime is 404964029. The reversal of 404963969 is 969369404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397603600 + 7360369 = 19940^2 + 2713^2 .

It is a cyclic number.

It is not a de Polignac number, because 404963969 - 2¹⁶ = 404898433 is a prime.

It is a super-2 number, since 2×404963969² = 327991632376465922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404963269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202481984 + 202481985.

It is an arithmetic number, because the mean of its divisors is an integer number (202481985).

Almost surely, 2^404963969 is an apocalyptic number.

It is an amenable number.

404963969 is a deficient number, since it is larger than the sum of its proper divisors (1).

404963969 is an equidigital number, since it uses as much as digits as its factorization.

404963969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 404963969 is about 20123.7165801946. The cubic root of 404963969 is about 739.8416808862.

The spelling of 404963969 in words is "four hundred four million, nine hundred sixty-three thousand, nine hundred sixty-nine".