40156433 has 4 divisors (see below), whose sum is σ = 41241780. Its totient is φ = 39071088.

The previous prime is 40156427. The next prime is 40156447. The reversal of 40156433 is 33465104.

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 25472209 + 14684224 = 5047^2 + 3832^2 .

It is a cyclic number.

It is not a de Polignac number, because 40156433 - 2¹² = 40152337 is a prime.

It is a super-2 number, since 2×40156433² = 3225078222566978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40156733) 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, 542618 + ... + 542691.

It is an arithmetic number, because the mean of its divisors is an integer number (10310445).

Almost surely, 2^40156433 is an apocalyptic number.

It is an amenable number.

40156433 is a deficient number, since it is larger than the sum of its proper divisors (1085347).

40156433 is a wasteful number, since it uses less digits than its factorization.

40156433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085346.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 40156433 is about 6336.9103670480. The cubic root of 40156433 is about 342.4404371888.

The spelling of 40156433 in words is "forty million, one hundred fifty-six thousand, four hundred thirty-three".