40173629 has 4 divisors (see below), whose sum is σ = 40931676. Its totient is φ = 39415584.

The previous prime is 40173611. The next prime is 40173667. The reversal of 40173629 is 92637104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10176100 + 29997529 = 3190^2 + 5477^2 .

It is a cyclic number.

It is not a de Polignac number, because 40173629 - 2⁸ = 40173373 is a prime.

It is a super-2 number, since 2×40173629² = 3227840934059282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40173595 and 40173604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40173689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378944 + ... + 379049.

It is an arithmetic number, because the mean of its divisors is an integer number (10232919).

Almost surely, 2^40173629 is an apocalyptic number.

It is an amenable number.

40173629 is a deficient number, since it is larger than the sum of its proper divisors (758047).

40173629 is an equidigital number, since it uses as much as digits as its factorization.

40173629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758046.

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

The square root of 40173629 is about 6338.2670344503. The cubic root of 40173629 is about 342.4893107645.

The spelling of 40173629 in words is "forty million, one hundred seventy-three thousand, six hundred twenty-nine".