40629629 has 2 divisors, whose sum is σ = 40629630. Its totient is φ = 40629628.

The previous prime is 40629607. The next prime is 40629637. The reversal of 40629629 is 92692604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37027225 + 3602404 = 6085^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 40629629 - 2⁸ = 40629373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40629592 and 40629601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40629649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20314814 + 20314815.

It is an arithmetic number, because the mean of its divisors is an integer number (20314815).

Almost surely, 2^40629629 is an apocalyptic number.

It is an amenable number.

40629629 is a deficient number, since it is larger than the sum of its proper divisors (1).

40629629 is an equidigital number, since it uses as much as digits as its factorization.

40629629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 40629629 is about 6374.1375102833. The cubic root of 40629629 is about 343.7802730804.

The spelling of 40629629 in words is "forty million, six hundred twenty-nine thousand, six hundred twenty-nine".