40129093 has 2 divisors, whose sum is σ = 40129094. Its totient is φ = 40129092.

The previous prime is 40129087. The next prime is 40129123. The reversal of 40129093 is 39092104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31730689 + 8398404 = 5633^2 + 2898^2 .

It is a cyclic number.

It is not a de Polignac number, because 40129093 - 2²⁵ = 6574661 is a prime.

It is a super-2 number, since 2×40129093² = 3220688210005298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40129993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20064546 + 20064547.

It is an arithmetic number, because the mean of its divisors is an integer number (20064547).

Almost surely, 2^40129093 is an apocalyptic number.

It is an amenable number.

40129093 is a deficient number, since it is larger than the sum of its proper divisors (1).

40129093 is an equidigital number, since it uses as much as digits as its factorization.

40129093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 40129093 is about 6334.7527970711. The cubic root of 40129093 is about 342.3627041300.

The spelling of 40129093 in words is "forty million, one hundred twenty-nine thousand, ninety-three".