7994149 has 4 divisors (see below), whose sum is σ = 8145036. Its totient is φ = 7843264.

The previous prime is 7994137. The next prime is 7994153. The reversal of 7994149 is 9414997.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7193124 + 801025 = 2682^2 + 895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7994149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7994159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75364 + ... + 75469.

It is an arithmetic number, because the mean of its divisors is an integer number (2036259).

Almost surely, 2^7994149 is an apocalyptic number.

It is an amenable number.

7994149 is a deficient number, since it is larger than the sum of its proper divisors (150887).

7994149 is a wasteful number, since it uses less digits than its factorization.

7994149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150886.

The product of its digits is 81648, while the sum is 43.

The square root of 7994149 is about 2827.3926151138. The cubic root of 7994149 is about 199.9512297750.

The spelling of 7994149 in words is "seven million, nine hundred ninety-four thousand, one hundred forty-nine".