40158655 has 4 divisors (see below), whose sum is σ = 48190392. Its totient is φ = 32126920.

The previous prime is 40158631. The next prime is 40158659. The reversal of 40158655 is 55685104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40158655 - 2¹¹ = 40156607 is a prime.

It is a super-2 number, since 2×40158655² = 3225435142818050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40158655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40158659) 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, 4015861 + ... + 4015870.

It is an arithmetic number, because the mean of its divisors is an integer number (12047598).

Almost surely, 2^40158655 is an apocalyptic number.

40158655 is a deficient number, since it is larger than the sum of its proper divisors (8031737).

40158655 is an equidigital number, since it uses as much as digits as its factorization.

40158655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031736.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 40158655 is about 6337.0856866544. The cubic root of 40158655 is about 342.4467532263.

The spelling of 40158655 in words is "forty million, one hundred fifty-eight thousand, six hundred fifty-five".