7991154 has 12 divisors (see below), whose sum is σ = 17314206. Its totient is φ = 2663712.

The previous prime is 7991147. The next prime is 7991167. The reversal of 7991154 is 4511997.

It can be written as a sum of positive squares in only one way, i.e., 6365529 + 1625625 = 2523^2 + 1275^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 221959 + ... + 221994.

Almost surely, 2^7991154 is an apocalyptic number.

7991154 is an abundant number, since it is smaller than the sum of its proper divisors (9323052).

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

7991154 is a wasteful number, since it uses less digits than its factorization.

7991154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443961 (or 443958 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 7991154 is about 2826.8629255767. The cubic root of 7991154 is about 199.9262561459.

It can be divided in two parts, 799 and 1154, that added together give a triangular number (1953 = T₆₂).

The spelling of 7991154 in words is "seven million, nine hundred ninety-one thousand, one hundred fifty-four".