611438459 has 2 divisors, whose sum is σ = 611438460. Its totient is φ = 611438458.

The previous prime is 611438447. The next prime is 611438467. The reversal of 611438459 is 954834116.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611438459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (611438479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305719229 + 305719230.

It is an arithmetic number, because the mean of its divisors is an integer number (305719230).

Almost surely, 2^611438459 is an apocalyptic number.

611438459 is a deficient number, since it is larger than the sum of its proper divisors (1).

611438459 is an equidigital number, since it uses as much as digits as its factorization.

611438459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 611438459 is about 24727.2816742965. The cubic root of 611438459 is about 848.7587229306.

The spelling of 611438459 in words is "six hundred eleven million, four hundred thirty-eight thousand, four hundred fifty-nine".