905199434 has 4 divisors (see below), whose sum is σ = 1357799154. Its totient is φ = 452599716.

The previous prime is 905199433. The next prime is 905199457. The reversal of 905199434 is 434991509.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 458088409 + 447111025 = 21403^2 + 21145^2 .

It is not an unprimeable number, because it can be changed into a prime (905199433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226299857 + ... + 226299860.

Almost surely, 2^905199434 is an apocalyptic number.

905199434 is a deficient number, since it is larger than the sum of its proper divisors (452599720).

905199434 is a wasteful number, since it uses less digits than its factorization.

905199434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452599719.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 905199434 is about 30086.5324356264. The cubic root of 905199434 is about 967.3450742901.

The spelling of 905199434 in words is "nine hundred five million, one hundred ninety-nine thousand, four hundred thirty-four".