40156653 has 8 divisors (see below), whose sum is σ = 53863488. Its totient is φ = 26610464.

The previous prime is 40156637. The next prime is 40156661. The reversal of 40156653 is 35665104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40156653 - 2⁴ = 40156637 is a prime.

It is a super-2 number, since 2×40156653² = 3225113560324818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40156653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40156603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39576 + ... + 40577.

It is an arithmetic number, because the mean of its divisors is an integer number (6732936).

Almost surely, 2^40156653 is an apocalyptic number.

It is an amenable number.

40156653 is a deficient number, since it is larger than the sum of its proper divisors (13706835).

40156653 is a wasteful number, since it uses less digits than its factorization.

40156653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80323.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 40156653 is about 6336.9277256412. The cubic root of 40156653 is about 342.4410625494.

The spelling of 40156653 in words is "forty million, one hundred fifty-six thousand, six hundred fifty-three".