3157749 has 12 divisors (see below), whose sum is σ = 5212896. Its totient is φ = 1804392.

The previous prime is 3157711. The next prime is 3157751. The reversal of 3157749 is 9477513.

It is a happy number.

3157749 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3157749 - 2¹³ = 3149557 is a prime.

It is a super-3 number, since 3×3157749³ = 94461333800890982247, which contains 333 as substring.

3157749 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24999 + ... + 25124.

It is an arithmetic number, because the mean of its divisors is an integer number (434408).

Almost surely, 2^3157749 is an apocalyptic number.

It is an amenable number.

3157749 is a deficient number, since it is larger than the sum of its proper divisors (2055147).

3157749 is a wasteful number, since it uses less digits than its factorization.

3157749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50136 (or 50133 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 3157749 is about 1777.0056274531. The cubic root of 3157749 is about 146.7098260265.

It can be divided in two parts, 31577 and 49, that added together give a triangular number (31626 = T₂₅₁).

The spelling of 3157749 in words is "three million, one hundred fifty-seven thousand, seven hundred forty-nine".