40385390 has 8 divisors (see below), whose sum is σ = 72693720. Its totient is φ = 16154152.

The previous prime is 40385381. The next prime is 40385413. The reversal of 40385390 is 9358304.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2019260 + ... + 2019279.

It is an arithmetic number, because the mean of its divisors is an integer number (9086715).

Almost surely, 2^40385390 is an apocalyptic number.

40385390 is a deficient number, since it is larger than the sum of its proper divisors (32308330).

40385390 is a wasteful number, since it uses less digits than its factorization.

40385390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038546.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 40385390 is about 6354.9500391427. The cubic root of 40385390 is about 343.0900267163.

The spelling of 40385390 in words is "forty million, three hundred eighty-five thousand, three hundred ninety".