7902749 has 2 divisors, whose sum is σ = 7902750. Its totient is φ = 7902748.

The previous prime is 7902707. The next prime is 7902757. The reversal of 7902749 is 9472097.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6708100 + 1194649 = 2590^2 + 1093^2 .

It is an emirp because it is prime and its reverse (9472097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7902749 - 2¹⁶ = 7837213 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7902779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3951374 + 3951375.

It is an arithmetic number, because the mean of its divisors is an integer number (3951375).

Almost surely, 2^7902749 is an apocalyptic number.

It is an amenable number.

7902749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7902749 is an equidigital number, since it uses as much as digits as its factorization.

7902749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 7902749 is about 2811.1828471304. The cubic root of 7902749 is about 199.1862686970.

The spelling of 7902749 in words is "seven million, nine hundred two thousand, seven hundred forty-nine".