40629644 has 24 divisors (see below), whose sum is σ = 77889168. Its totient is φ = 18391040.

The previous prime is 40629637. The next prime is 40629649. The reversal of 40629644 is 44692604.

It is not an unprimeable number, because it can be changed into a prime (40629649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9512 + ... + 13104.

It is an arithmetic number, because the mean of its divisors is an integer number (3245382).

Almost surely, 2^40629644 is an apocalyptic number.

40629644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40629644 is a deficient number, since it is larger than the sum of its proper divisors (37259524).

40629644 is a wasteful number, since it uses less digits than its factorization.

40629644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865 (or 3863 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 40629644 is about 6374.1386869129. The cubic root of 40629644 is about 343.7803153870.

The spelling of 40629644 in words is "forty million, six hundred twenty-nine thousand, six hundred forty-four".