7908442 has 4 divisors (see below), whose sum is σ = 11862666. Its totient is φ = 3954220.

The previous prime is 7908437. The next prime is 7908463. The reversal of 7908442 is 2448097.

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., 7667361 + 241081 = 2769^2 + 491^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7908398 and 7908407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977109 + ... + 1977112.

Almost surely, 2^7908442 is an apocalyptic number.

7908442 is a deficient number, since it is larger than the sum of its proper divisors (3954224).

7908442 is a wasteful number, since it uses less digits than its factorization.

7908442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954223.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 7908442 is about 2812.1952279314. The cubic root of 7908442 is about 199.2340872995.

The spelling of 7908442 in words is "seven million, nine hundred eight thousand, four hundred forty-two".