40429537 has 2 divisors, whose sum is σ = 40429538. Its totient is φ = 40429536.

The previous prime is 40429507. The next prime is 40429559. The reversal of 40429537 is 73592404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33454656 + 6974881 = 5784^2 + 2641^2 .

It is a cyclic number.

It is not a de Polignac number, because 40429537 - 2⁷ = 40429409 is a prime.

It is not a weakly prime, because it can be changed into another prime (40429507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20214768 + 20214769.

It is an arithmetic number, because the mean of its divisors is an integer number (20214769).

Almost surely, 2^40429537 is an apocalyptic number.

It is an amenable number.

40429537 is a deficient number, since it is larger than the sum of its proper divisors (1).

40429537 is an equidigital number, since it uses as much as digits as its factorization.

40429537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 40429537 is about 6358.4225244946. The cubic root of 40429537 is about 343.2149966596.

The spelling of 40429537 in words is "forty million, four hundred twenty-nine thousand, five hundred thirty-seven".