40146655 has 4 divisors (see below), whose sum is σ = 48175992. Its totient is φ = 32117320.

The previous prime is 40146647. The next prime is 40146683. The reversal of 40146655 is 55664104.

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

It is not a de Polignac number, because 40146655 - 2³ = 40146647 is a prime.

It is a super-2 number, since 2×40146655² = 3223507815378050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4014661 + ... + 4014670.

It is an arithmetic number, because the mean of its divisors is an integer number (12043998).

Almost surely, 2^40146655 is an apocalyptic number.

40146655 is a deficient number, since it is larger than the sum of its proper divisors (8029337).

40146655 is an equidigital number, since it uses as much as digits as its factorization.

40146655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029336.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 40146655 is about 6336.1388084542. The cubic root of 40146655 is about 342.4126404436.

The spelling of 40146655 in words is "forty million, one hundred forty-six thousand, six hundred fifty-five".