7490139 has 8 divisors (see below), whose sum is σ = 10002240. Its totient is φ = 4985736.

The previous prime is 7490113. The next prime is 7490141. The reversal of 7490139 is 9310947.

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

It is not a de Polignac number, because 7490139 - 2¹² = 7486043 is a prime.

It is a super-2 number, since 2×7490139² = 112204364478642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

7490139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7490159) 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, 972 + ... + 3990.

It is an arithmetic number, because the mean of its divisors is an integer number (1250280).

Almost surely, 2^7490139 is an apocalyptic number.

7490139 is a deficient number, since it is larger than the sum of its proper divisors (2512101).

7490139 is a wasteful number, since it uses less digits than its factorization.

7490139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 7490139 is about 2736.8118313103. The cubic root of 7490139 is about 195.6575566334.

The spelling of 7490139 in words is "seven million, four hundred ninety thousand, one hundred thirty-nine".