40113890 has 16 divisors (see below), whose sum is σ = 72429120. Its totient is φ = 15995760.

The previous prime is 40113881. The next prime is 40113893. The reversal of 40113890 is 9831104.

It is not an unprimeable number, because it can be changed into a prime (40113893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2750 + ... + 9369.

It is an arithmetic number, because the mean of its divisors is an integer number (4526820).

Almost surely, 2^40113890 is an apocalyptic number.

40113890 is a deficient number, since it is larger than the sum of its proper divisors (32315230).

40113890 is a wasteful number, since it uses less digits than its factorization.

40113890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12457.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 40113890 is about 6333.5527154986. The cubic root of 40113890 is about 342.3194637007.

Adding to 40113890 its reverse (9831104), we get a palindrome (49944994).

The spelling of 40113890 in words is "forty million, one hundred thirteen thousand, eight hundred ninety".