408963489 has 16 divisors (see below), whose sum is σ = 595375104. Its totient is φ = 247640400.

The previous prime is 408963469. The next prime is 408963521. The reversal of 408963489 is 984369804.

It is a happy number.

It is not a de Polignac number, because 408963489 - 2¹⁶ = 408897953 is a prime.

It is a super-2 number, since 2×408963489² = 334502270670106242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (408963449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38244 + ... + 47754.

It is an arithmetic number, because the mean of its divisors is an integer number (37210944).

Almost surely, 2^408963489 is an apocalyptic number.

It is an amenable number.

408963489 is a deficient number, since it is larger than the sum of its proper divisors (186411615).

408963489 is a wasteful number, since it uses less digits than its factorization.

408963489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10828.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 408963489 is about 20222.8457196311. The cubic root of 408963489 is about 742.2693235284.

The spelling of 408963489 in words is "four hundred eight million, nine hundred sixty-three thousand, four hundred eighty-nine".