40155029 has 4 divisors (see below), whose sum is σ = 40236000. Its totient is φ = 40074060.

The previous prime is 40155007. The next prime is 40155041. The reversal of 40155029 is 92055104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40155029 - 2⁸ = 40154773 is a prime.

It is a super-2 number, since 2×40155029² = 3224852707981682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40154989 and 40155007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155529) 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, 39737 + ... + 40734.

It is an arithmetic number, because the mean of its divisors is an integer number (10059000).

Almost surely, 2^40155029 is an apocalyptic number.

It is an amenable number.

40155029 is a deficient number, since it is larger than the sum of its proper divisors (80971).

40155029 is an equidigital number, since it uses as much as digits as its factorization.

40155029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80970.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 40155029 is about 6336.7995865421. The cubic root of 40155029 is about 342.4364461970.

The spelling of 40155029 in words is "forty million, one hundred fifty-five thousand, twenty-nine".