40220386 has 8 divisors (see below), whose sum is σ = 60525504. Its totient is φ = 20045220.

The previous prime is 40220381. The next prime is 40220387. The reversal of 40220386 is 68302204.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40220386.

It is not an unprimeable number, because it can be changed into a prime (40220381) 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, 31710 + ... + 32953.

It is an arithmetic number, because the mean of its divisors is an integer number (7565688).

Almost surely, 2^40220386 is an apocalyptic number.

40220386 is a deficient number, since it is larger than the sum of its proper divisors (20305118).

40220386 is a wasteful number, since it uses less digits than its factorization.

40220386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64976.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40220386 is about 6341.9544306152. The cubic root of 40220386 is about 342.6221305972.

The spelling of 40220386 in words is "forty million, two hundred twenty thousand, three hundred eighty-six".