434894987 has 2 divisors, whose sum is σ = 434894988. Its totient is φ = 434894986.

The previous prime is 434894981. The next prime is 434895011. The reversal of 434894987 is 789498434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 434894987 - 2¹² = 434890891 is a prime.

It is not a weakly prime, because it can be changed into another prime (434894981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217447493 + 217447494.

It is an arithmetic number, because the mean of its divisors is an integer number (217447494).

Almost surely, 2^434894987 is an apocalyptic number.

434894987 is a deficient number, since it is larger than the sum of its proper divisors (1).

434894987 is an equidigital number, since it uses as much as digits as its factorization.

434894987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 56.

The square root of 434894987 is about 20854.1359686754. The cubic root of 434894987 is about 757.6375084666.

The spelling of 434894987 in words is "four hundred thirty-four million, eight hundred ninety-four thousand, nine hundred eighty-seven".