3140749 has 2 divisors, whose sum is σ = 3140750. Its totient is φ = 3140748.

The previous prime is 3140741. The next prime is 3140777. The reversal of 3140749 is 9470413.

It is an a-pointer prime, because the next prime (3140777) can be obtained adding 3140749 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2951524 + 189225 = 1718^2 + 435^2 .

It is an emirp because it is prime and its reverse (9470413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3140749 - 2³ = 3140741 is a prime.

It is a Chen prime.

3140749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3140741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1570374 + 1570375.

It is an arithmetic number, because the mean of its divisors is an integer number (1570375).

Almost surely, 2^3140749 is an apocalyptic number.

It is an amenable number.

3140749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3140749 is an equidigital number, since it uses as much as digits as its factorization.

3140749 is an evil number, because the sum of its binary digits is even.

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

The square root of 3140749 is about 1772.2158446420. The cubic root of 3140749 is about 146.4460773722.

The spelling of 3140749 in words is "three million, one hundred forty thousand, seven hundred forty-nine".