7991254 has 4 divisors (see below), whose sum is σ = 11986884. Its totient is φ = 3995626.

The previous prime is 7991251. The next prime is 7991257. The reversal of 7991254 is 4521997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4521997 = 151 ⋅29947.

It is an interprime number because it is at equal distance from previous prime (7991251) and next prime (7991257).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7991251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997812 + ... + 1997815.

It is an arithmetic number, because the mean of its divisors is an integer number (2996721).

Almost surely, 2^7991254 is an apocalyptic number.

7991254 is a deficient number, since it is larger than the sum of its proper divisors (3995630).

7991254 is a wasteful number, since it uses less digits than its factorization.

7991254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995629.

The product of its digits is 22680, while the sum is 37.

The square root of 7991254 is about 2826.8806129725. The cubic root of 7991254 is about 199.9270900906.

The spelling of 7991254 in words is "seven million, nine hundred ninety-one thousand, two hundred fifty-four".