402832489 has 4 divisors (see below), whose sum is σ = 410433156. Its totient is φ = 395231824.

The previous prime is 402832477. The next prime is 402832501. The reversal of 402832489 is 984238204.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (402832477) and next prime (402832501).

It can be written as a sum of positive squares in 2 ways, for example, as 258952464 + 143880025 = 16092^2 + 11995^2 .

It is a cyclic number.

It is not a de Polignac number, because 402832489 - 2⁷ = 402832361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402832429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800254 + ... + 3800359.

It is an arithmetic number, because the mean of its divisors is an integer number (102608289).

Almost surely, 2^402832489 is an apocalyptic number.

It is an amenable number.

402832489 is a deficient number, since it is larger than the sum of its proper divisors (7600667).

402832489 is an equidigital number, since it uses as much as digits as its factorization.

402832489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600666.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 402832489 is about 20070.6873076136. The cubic root of 402832489 is about 738.5413737841.

The spelling of 402832489 in words is "four hundred two million, eight hundred thirty-two thousand, four hundred eighty-nine".