40371629 has 2 divisors, whose sum is σ = 40371630. Its totient is φ = 40371628.

The previous prime is 40371581. The next prime is 40371631. The reversal of 40371629 is 92617304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39375625 + 996004 = 6275^2 + 998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40371629 is a prime.

It is a super-2 number, since 2×40371629² = 3259736856227282, which contains 22 as substring.

Together with 40371631, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40371595 and 40371604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40371689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20185814 + 20185815.

It is an arithmetic number, because the mean of its divisors is an integer number (20185815).

Almost surely, 2^40371629 is an apocalyptic number.

It is an amenable number.

40371629 is a deficient number, since it is larger than the sum of its proper divisors (1).

40371629 is an equidigital number, since it uses as much as digits as its factorization.

40371629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 40371629 is about 6353.8672475902. The cubic root of 40371629 is about 343.0510538913.

The spelling of 40371629 in words is "forty million, three hundred seventy-one thousand, six hundred twenty-nine".