408853969 has 2 divisors, whose sum is σ = 408853970. Its totient is φ = 408853968.

The previous prime is 408853901. The next prime is 408854101. The reversal of 408853969 is 969358804.

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., 369100944 + 39753025 = 19212^2 + 6305^2 .

It is a cyclic number.

It is not a de Polignac number, because 408853969 - 2¹⁵ = 408821201 is a prime.

It is a super-2 number, since 2×408853969² = 334323135934105922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (408853069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204426984 + 204426985.

It is an arithmetic number, because the mean of its divisors is an integer number (204426985).

Almost surely, 2^408853969 is an apocalyptic number.

It is an amenable number.

408853969 is a deficient number, since it is larger than the sum of its proper divisors (1).

408853969 is an equidigital number, since it uses as much as digits as its factorization.

408853969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 408853969 is about 20220.1377097190. The cubic root of 408853969 is about 742.2030579600.

The spelling of 408853969 in words is "four hundred eight million, eight hundred fifty-three thousand, nine hundred sixty-nine".