409931089 has 2 divisors, whose sum is σ = 409931090. Its totient is φ = 409931088.

The previous prime is 409931077. The next prime is 409931101. The reversal of 409931089 is 980139904.

It is a balanced prime because it is at equal distance from previous prime (409931077) and next prime (409931101).

It can be written as a sum of positive squares in only one way, i.e., 271986064 + 137945025 = 16492^2 + 11745^2 .

It is a cyclic number.

It is not a de Polignac number, because 409931089 - 2²⁵ = 376376657 is a prime.

It is not a weakly prime, because it can be changed into another prime (409931069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204965544 + 204965545.

It is an arithmetic number, because the mean of its divisors is an integer number (204965545).

Almost surely, 2^409931089 is an apocalyptic number.

It is an amenable number.

409931089 is a deficient number, since it is larger than the sum of its proper divisors (1).

409931089 is an equidigital number, since it uses as much as digits as its factorization.

409931089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 409931089 is about 20246.7550239538. The cubic root of 409931089 is about 742.8542609197.

The spelling of 409931089 in words is "four hundred nine million, nine hundred thirty-one thousand, eighty-nine".