434777138 has 4 divisors (see below), whose sum is σ = 652165710. Its totient is φ = 217388568.

The previous prime is 434777113. The next prime is 434777141. The reversal of 434777138 is 831777434.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831777434 = 2 ⋅415888717.

It can be written as a sum of positive squares in only one way, i.e., 255136729 + 179640409 = 15973^2 + 13403^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108694283 + ... + 108694286.

Almost surely, 2^434777138 is an apocalyptic number.

434777138 is a deficient number, since it is larger than the sum of its proper divisors (217388572).

434777138 is a wasteful number, since it uses less digits than its factorization.

434777138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217388571.

The product of its digits is 395136, while the sum is 44.

The square root of 434777138 is about 20851.3102226215. The cubic root of 434777138 is about 757.5690667418.

The spelling of 434777138 in words is "four hundred thirty-four million, seven hundred seventy-seven thousand, one hundred thirty-eight".