8378890 has 16 divisors (see below), whose sum is σ = 16242408. Its totient is φ = 3093696.

The previous prime is 8378879. The next prime is 8378893. The reversal of 8378890 is 988738.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2163841 + 6215049 = 1471^2 + 2493^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32097 + ... + 32356.

Almost surely, 2^8378890 is an apocalyptic number.

8378890 is a deficient number, since it is larger than the sum of its proper divisors (7863518).

8378890 is a wasteful number, since it uses less digits than its factorization.

8378890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64473.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 8378890 is about 2894.6312373081. The cubic root of 8378890 is about 203.1088417916.

The spelling of 8378890 in words is "eight million, three hundred seventy-eight thousand, eight hundred ninety".