40156029 has 12 divisors (see below), whose sum is σ = 58150300. Its totient is φ = 26702784.

The previous prime is 40156021. The next prime is 40156069. The reversal of 40156029 is 92065104.

40156029 is a `hidden beast` number, since 40 + 15 + 602 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24235929 + 15920100 = 4923^2 + 3990^2 .

It is not a de Polignac number, because 40156029 - 2³ = 40156021 is a prime.

It is a super-2 number, since 2×40156029² = 3225013330097682, 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 = 40155993 and 40156011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40156021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1774 + ... + 9135.

Almost surely, 2^40156029 is an apocalyptic number.

It is an amenable number.

40156029 is a deficient number, since it is larger than the sum of its proper divisors (17994271).

40156029 is a wasteful number, since it uses less digits than its factorization.

40156029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11324 (or 11321 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40156029 is about 6336.8784902348. The cubic root of 40156029 is about 342.4392887933.

The spelling of 40156029 in words is "forty million, one hundred fifty-six thousand, twenty-nine".