7139390 has 8 divisors (see below), whose sum is σ = 12850920. Its totient is φ = 2855752.

The previous prime is 7139357. The next prime is 7139401. The reversal of 7139390 is 939317.

It is a happy number.

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

It is a magnanimous number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356960 + ... + 356979.

It is an arithmetic number, because the mean of its divisors is an integer number (1606365).

Almost surely, 2^7139390 is an apocalyptic number.

7139390 is a deficient number, since it is larger than the sum of its proper divisors (5711530).

7139390 is a wasteful number, since it uses less digits than its factorization.

7139390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713946.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 7139390 is about 2671.9636973582. The cubic root of 7139390 is about 192.5545131495.

The spelling of 7139390 in words is "seven million, one hundred thirty-nine thousand, three hundred ninety".