40381486 has 4 divisors (see below), whose sum is σ = 60572232. Its totient is φ = 20190742.

The previous prime is 40381447. The next prime is 40381489. The reversal of 40381486 is 68418304.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40381489) 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 as a sum of consecutive naturals, namely, 10095370 + ... + 10095373.

It is an arithmetic number, because the mean of its divisors is an integer number (15143058).

Almost surely, 2^40381486 is an apocalyptic number.

40381486 is a deficient number, since it is larger than the sum of its proper divisors (20190746).

40381486 is a wasteful number, since it uses less digits than its factorization.

40381486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190745.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 40381486 is about 6354.6428695876. The cubic root of 40381486 is about 343.0789710133.

The spelling of 40381486 in words is "forty million, three hundred eighty-one thousand, four hundred eighty-six".