780799434 has 8 divisors (see below), whose sum is σ = 1561598880. Its totient is φ = 260266476.

The previous prime is 780799427. The next prime is 780799457. The reversal of 780799434 is 434997087.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

780799434 is an admirable number.

It is a super-2 number, since 2×780799434² = 1219295512269440712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65066614 + ... + 65066625.

It is an arithmetic number, because the mean of its divisors is an integer number (195199860).

Almost surely, 2^780799434 is an apocalyptic number.

780799434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

780799434 is a wasteful number, since it uses less digits than its factorization.

780799434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130133244.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 780799434 is about 27942.7885866819. The cubic root of 780799434 is about 920.8307846825.

The spelling of 780799434 in words is "seven hundred eighty million, seven hundred ninety-nine thousand, four hundred thirty-four".