40149437 has 2 divisors, whose sum is σ = 40149438. Its totient is φ = 40149436.

The previous prime is 40149409. The next prime is 40149443. The reversal of 40149437 is 73494104.

It is a happy number.

40149437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29528356 + 10621081 = 5434^2 + 3259^2 .

It is a cyclic number.

It is not a de Polignac number, because 40149437 - 2²⁴ = 23372221 is a prime.

It is a super-2 number, since 2×40149437² = 3223954582833938, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40149457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20074718 + 20074719.

It is an arithmetic number, because the mean of its divisors is an integer number (20074719).

Almost surely, 2^40149437 is an apocalyptic number.

It is an amenable number.

40149437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40149437 is an equidigital number, since it uses as much as digits as its factorization.

40149437 is an odious number, because the sum of its binary digits is odd.

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

The square root of 40149437 is about 6336.3583389830. The cubic root of 40149437 is about 342.4205495289.

The spelling of 40149437 in words is "forty million, one hundred forty-nine thousand, four hundred thirty-seven".