40400427 has 8 divisors (see below), whose sum is σ = 54780480. Its totient is φ = 26477000.

The previous prime is 40400419. The next prime is 40400431. The reversal of 40400427 is 72400404.

40400427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40400427 - 2³ = 40400419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40400417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113949 + ... + 114302.

It is an arithmetic number, because the mean of its divisors is an integer number (6847560).

Almost surely, 2^40400427 is an apocalyptic number.

40400427 is a deficient number, since it is larger than the sum of its proper divisors (14380053).

40400427 is a wasteful number, since it uses less digits than its factorization.

40400427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228313.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 40400427 is about 6356.1330225224. The cubic root of 40400427 is about 343.1326032071.

The spelling of 40400427 in words is "forty million, four hundred thousand, four hundred twenty-seven".