2698139 has 4 divisors (see below), whose sum is σ = 2714856. Its totient is φ = 2681424.

The previous prime is 2698109. The next prime is 2698159. The reversal of 2698139 is 9318962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9318962 = 2 ⋅4659481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2698139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2698109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8114 + ... + 8439.

It is an arithmetic number, because the mean of its divisors is an integer number (678714).

2^2698139 is an apocalyptic number.

2698139 is a deficient number, since it is larger than the sum of its proper divisors (16717).

2698139 is a wasteful number, since it uses less digits than its factorization.

2698139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16716.

The product of its digits is 23328, while the sum is 38.

The square root of 2698139 is about 1642.6012906363. The cubic root of 2698139 is about 139.2156650744.

The spelling of 2698139 in words is "two million, six hundred ninety-eight thousand, one hundred thirty-nine".