40633429 has 2 divisors, whose sum is σ = 40633430. Its totient is φ = 40633428.

The previous prime is 40633421. The next prime is 40633441. The reversal of 40633429 is 92433604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 10712529 = 5470^2 + 3273^2 .

It is a cyclic number.

It is not a de Polignac number, because 40633429 - 2³ = 40633421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40633429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40633421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20316714 + 20316715.

It is an arithmetic number, because the mean of its divisors is an integer number (20316715).

Almost surely, 2^40633429 is an apocalyptic number.

It is an amenable number.

40633429 is a deficient number, since it is larger than the sum of its proper divisors (1).

40633429 is an equidigital number, since it uses as much as digits as its factorization.

40633429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 40633429 is about 6374.4355828575. The cubic root of 40633429 is about 343.7909904177.

The spelling of 40633429 in words is "forty million, six hundred thirty-three thousand, four hundred twenty-nine".