7945394 has 4 divisors (see below), whose sum is σ = 11918094. Its totient is φ = 3972696.

The previous prime is 7945387. The next prime is 7945423. The reversal of 7945394 is 4935497.

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., 5004169 + 2941225 = 2237^2 + 1715^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986347 + ... + 1986350.

Almost surely, 2^7945394 is an apocalyptic number.

7945394 is a deficient number, since it is larger than the sum of its proper divisors (3972700).

7945394 is a wasteful number, since it uses less digits than its factorization.

7945394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972699.

The product of its digits is 136080, while the sum is 41.

The square root of 7945394 is about 2818.7575277061. The cubic root of 7945394 is about 199.5439107034.

The spelling of 7945394 in words is "seven million, nine hundred forty-five thousand, three hundred ninety-four".