40129607 has 4 divisors (see below), whose sum is σ = 45862416. Its totient is φ = 34396800.

The previous prime is 40129603. The next prime is 40129637. The reversal of 40129607 is 70692104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40129607 - 2² = 40129603 is a prime.

It is a super-2 number, since 2×40129607² = 3220770715948898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40129607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40129603) 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 in 3 ways as a sum of consecutive naturals, for example, 2866394 + ... + 2866407.

It is an arithmetic number, because the mean of its divisors is an integer number (11465604).

Almost surely, 2^40129607 is an apocalyptic number.

40129607 is a deficient number, since it is larger than the sum of its proper divisors (5732809).

40129607 is an equidigital number, since it uses as much as digits as its factorization.

40129607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732808.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 40129607 is about 6334.7933667958. The cubic root of 40129607 is about 342.3641658599.

The spelling of 40129607 in words is "forty million, one hundred twenty-nine thousand, six hundred seven".