4378986 has 24 divisors (see below), whose sum is σ = 9632064. Its totient is φ = 1437480.

The previous prime is 4378981. The next prime is 4379003. The reversal of 4378986 is 6898734.

It is a happy number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4378981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610 + ... + 3021.

It is an arithmetic number, because the mean of its divisors is an integer number (401336).

Almost surely, 2^4378986 is an apocalyptic number.

4378986 is an abundant number, since it is smaller than the sum of its proper divisors (5253078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4378986 is a wasteful number, since it uses less digits than its factorization.

4378986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706 (or 3703 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 4378986 is about 2092.6026856525. The cubic root of 4378986 is about 163.6029707955.

The spelling of 4378986 in words is "four million, three hundred seventy-eight thousand, nine hundred eighty-six".