76149749 has 12 divisors (see below), whose sum is σ = 86979564. Its totient is φ = 66044544.

The previous prime is 76149743. The next prime is 76149763. The reversal of 76149749 is 94794167.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34456900 + 41692849 = 5870^2 + 6457^2 .

It is not a de Polignac number, because 76149749 - 2¹⁶ = 76084213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76149743) 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, 129434 + ... + 130020.

It is an arithmetic number, because the mean of its divisors is an integer number (7248297).

Almost surely, 2^76149749 is an apocalyptic number.

It is an amenable number.

76149749 is a deficient number, since it is larger than the sum of its proper divisors (10829815).

76149749 is an equidigital number, since it uses as much as digits as its factorization.

76149749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 617 counting only the distinct ones).

The product of its digits is 381024, while the sum is 47.

The square root of 76149749 is about 8726.3823546760. The cubic root of 76149749 is about 423.8603821931.

The spelling of 76149749 in words is "seventy-six million, one hundred forty-nine thousand, seven hundred forty-nine".