40134749 has 2 divisors, whose sum is σ = 40134750. Its totient is φ = 40134748.

The previous prime is 40134719. The next prime is 40134779. The reversal of 40134749 is 94743104.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (40134719) and next prime (40134779).

It can be written as a sum of positive squares in only one way, i.e., 39601849 + 532900 = 6293^2 + 730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40134749 is a prime.

It is a super-2 number, since 2×40134749² = 3221596154586002, which contains 22 as substring.

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 (40134709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067374 + 20067375.

It is an arithmetic number, because the mean of its divisors is an integer number (20067375).

Almost surely, 2^40134749 is an apocalyptic number.

It is an amenable number.

40134749 is a deficient number, since it is larger than the sum of its proper divisors (1).

40134749 is an equidigital number, since it uses as much as digits as its factorization.

40134749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40134749 is about 6335.1992076019. The cubic root of 40134749 is about 342.3787881590.

The spelling of 40134749 in words is "forty million, one hundred thirty-four thousand, seven hundred forty-nine".