7448139 has 16 divisors (see below), whose sum is σ = 11082240. Its totient is φ = 4943880.

The previous prime is 7448131. The next prime is 7448141. The reversal of 7448139 is 9318447.

It is a happy number.

It is not a de Polignac number, because 7448139 - 2³ = 7448131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7448131) 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, 7954 + ... + 8840.

It is an arithmetic number, because the mean of its divisors is an integer number (692640).

Almost surely, 2^7448139 is an apocalyptic number.

7448139 is a deficient number, since it is larger than the sum of its proper divisors (3634101).

7448139 is a wasteful number, since it uses less digits than its factorization.

7448139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1201 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7448139 is about 2729.1278826761. The cubic root of 7448139 is about 195.2911626696.

The spelling of 7448139 in words is "seven million, four hundred forty-eight thousand, one hundred thirty-nine".