7489139 has 8 divisors (see below), whose sum is σ = 8625408. Its totient is φ = 6369480.

The previous prime is 7489127. The next prime is 7489171. The reversal of 7489139 is 9319847.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7489139 - 2⁴ = 7489123 is a prime.

It is a super-2 number, since 2×7489139² = 112174405922642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7489096 and 7489105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7489189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3167 + ... + 5000.

It is an arithmetic number, because the mean of its divisors is an integer number (1078176).

Almost surely, 2^7489139 is an apocalyptic number.

7489139 is a deficient number, since it is larger than the sum of its proper divisors (1136269).

7489139 is a wasteful number, since it uses less digits than its factorization.

7489139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8305.

The product of its digits is 54432, while the sum is 41.

The square root of 7489139 is about 2736.6291308835. The cubic root of 7489139 is about 195.6488489061.

The spelling of 7489139 in words is "seven million, four hundred eighty-nine thousand, one hundred thirty-nine".