43700749 has 2 divisors, whose sum is σ = 43700750. Its totient is φ = 43700748.

The previous prime is 43700729. The next prime is 43700791. The reversal of 43700749 is 94700734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 8649 = 6610^2 + 93^2 .

It is a cyclic number.

It is not a de Polignac number, because 43700749 - 2⁵ = 43700717 is a prime.

It is a super-2 number, since 2×43700749² = 3819510926322002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43700729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21850374 + 21850375.

It is an arithmetic number, because the mean of its divisors is an integer number (21850375).

Almost surely, 2^43700749 is an apocalyptic number.

It is an amenable number.

43700749 is a deficient number, since it is larger than the sum of its proper divisors (1).

43700749 is an equidigital number, since it uses as much as digits as its factorization.

43700749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 43700749 is about 6610.6542036322. The cubic root of 43700749 is about 352.2326635236.

The spelling of 43700749 in words is "forty-three million, seven hundred thousand, seven hundred forty-nine".