7900434 has 12 divisors (see below), whose sum is σ = 17117646. Its totient is φ = 2633472.

The previous prime is 7900421. The next prime is 7900457. The reversal of 7900434 is 4340097.

It can be written as a sum of positive squares in only one way, i.e., 7700625 + 199809 = 2775^2 + 447^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7900398 and 7900407.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219439 + ... + 219474.

Almost surely, 2^7900434 is an apocalyptic number.

7900434 is an abundant number, since it is smaller than the sum of its proper divisors (9217212).

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

7900434 is a wasteful number, since it uses less digits than its factorization.

7900434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438921 (or 438918 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7900434 is about 2810.7710685860. The cubic root of 7900434 is about 199.1668171852.

The spelling of 7900434 in words is "seven million, nine hundred thousand, four hundred thirty-four".