40908155 has 4 divisors (see below), whose sum is σ = 49089792. Its totient is φ = 32726520.

The previous prime is 40908151. The next prime is 40908163. The reversal of 40908155 is 55180904.

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

It is not a de Polignac number, because 40908155 - 2² = 40908151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40908151) 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, 4090811 + ... + 4090820.

It is an arithmetic number, because the mean of its divisors is an integer number (12272448).

Almost surely, 2^40908155 is an apocalyptic number.

40908155 is a deficient number, since it is larger than the sum of its proper divisors (8181637).

40908155 is an equidigital number, since it uses as much as digits as its factorization.

40908155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181636.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 40908155 is about 6395.9483268707. The cubic root of 40908155 is about 344.5640506313.

The spelling of 40908155 in words is "forty million, nine hundred eight thousand, one hundred fifty-five".