40386790 has 8 divisors (see below), whose sum is σ = 72696240. Its totient is φ = 16154712.

The previous prime is 40386757. The next prime is 40386791. The reversal of 40386790 is 9768304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40386791) 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, 2019330 + ... + 2019349.

It is an arithmetic number, because the mean of its divisors is an integer number (9087030).

Almost surely, 2^40386790 is an apocalyptic number.

40386790 is a deficient number, since it is larger than the sum of its proper divisors (32309450).

40386790 is a wasteful number, since it uses less digits than its factorization.

40386790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038686.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 40386790 is about 6355.0601885427. The cubic root of 40386790 is about 343.0939911903.

The spelling of 40386790 in words is "forty million, three hundred eighty-six thousand, seven hundred ninety".