6902139 has 16 divisors (see below), whose sum is σ = 9752832. Its totient is φ = 4332768.

The previous prime is 6902131. The next prime is 6902141. The reversal of 6902139 is 9312096.

It is not a de Polignac number, because 6902139 - 2³ = 6902131 is a prime.

It is an Ulam number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (6902131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3877 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (609552).

Almost surely, 2^6902139 is an apocalyptic number.

6902139 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

6902139 is a deficient number, since it is larger than the sum of its proper divisors (2850693).

6902139 is a wasteful number, since it uses less digits than its factorization.

6902139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 6902139 is about 2627.1922274550. The cubic root of 6902139 is about 190.3974965392.

The spelling of 6902139 in words is "six million, nine hundred two thousand, one hundred thirty-nine".