3122749 has 8 divisors (see below), whose sum is σ = 3692160. Its totient is φ = 2584176.

The previous prime is 3122737. The next prime is 3122761. The reversal of 3122749 is 9472213.

It is an interprime number because it is at equal distance from previous prime (3122737) and next prime (3122761).

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

It is a de Polignac number, because none of the positive numbers 2^k-3122749 is a prime.

It is a super-2 number, since 2×3122749² = 19503122634002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122719) 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, 7489 + ... + 7894.

It is an arithmetic number, because the mean of its divisors is an integer number (461520).

Almost surely, 2^3122749 is an apocalyptic number.

It is an amenable number.

3122749 is a deficient number, since it is larger than the sum of its proper divisors (569411).

3122749 is a wasteful number, since it uses less digits than its factorization.

3122749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15419.

The product of its digits is 3024, while the sum is 28.

The square root of 3122749 is about 1767.1301593261. The cubic root of 3122749 is about 146.1657746710.

The spelling of 3122749 in words is "three million, one hundred twenty-two thousand, seven hundred forty-nine".