8402090 has 32 divisors (see below), whose sum is σ = 15676416. Its totient is φ = 3240640.

The previous prime is 8402077. The next prime is 8402099. The reversal of 8402090 is 902048.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8402099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43895 + ... + 44085.

It is an arithmetic number, because the mean of its divisors is an integer number (489888).

Almost surely, 2^8402090 is an apocalyptic number.

8402090 is a deficient number, since it is larger than the sum of its proper divisors (7274326).

8402090 is a wasteful number, since it uses less digits than its factorization.

8402090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 8402090 is about 2898.6358860678. The cubic root of 8402090 is about 203.2961292378.

The spelling of 8402090 in words is "eight million, four hundred two thousand, ninety".