7814749 has 2 divisors, whose sum is σ = 7814750. Its totient is φ = 7814748.

The previous prime is 7814743. The next prime is 7814767. The reversal of 7814749 is 9474187.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7252249 + 562500 = 2693^2 + 750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7814749 is a prime.

It is a super-2 number, since 2×7814749² = 122140603866002, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7814743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3907374 + 3907375.

It is an arithmetic number, because the mean of its divisors is an integer number (3907375).

Almost surely, 2^7814749 is an apocalyptic number.

It is an amenable number.

7814749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7814749 is an equidigital number, since it uses as much as digits as its factorization.

7814749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 7814749 is about 2795.4872562757. The cubic root of 7814749 is about 198.4441700157. Note that the first 3 decimals are identical.

The spelling of 7814749 in words is "seven million, eight hundred fourteen thousand, seven hundred forty-nine".