7899141 has 16 divisors (see below), whose sum is σ = 10961408. Its totient is φ = 5054400.

The previous prime is 7899137. The next prime is 7899161. The reversal of 7899141 is 1419987.

It is a happy number.

It is not a de Polignac number, because 7899141 - 2² = 7899137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7899141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7899161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14331 + ... + 14871.

It is an arithmetic number, because the mean of its divisors is an integer number (685088).

Almost surely, 2^7899141 is an apocalyptic number.

7899141 is the 1623-rd octagonal number.

It is an amenable number.

7899141 is a deficient number, since it is larger than the sum of its proper divisors (3062267).

7899141 is a wasteful number, since it uses less digits than its factorization.

7899141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732.

The product of its digits is 18144, while the sum is 39.

The square root of 7899141 is about 2810.5410511145. The cubic root of 7899141 is about 199.1559512529.

The spelling of 7899141 in words is "seven million, eight hundred ninety-nine thousand, one hundred forty-one".