8442690 has 16 divisors (see below), whose sum is σ = 20262528. Its totient is φ = 2251376.

The previous prime is 8442689. The next prime is 8442713. The reversal of 8442690 is 962448.

It is a super-2 number, since 2×8442690² = 142558028872200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140682 + ... + 140741.

It is an arithmetic number, because the mean of its divisors is an integer number (1266408).

Almost surely, 2^8442690 is an apocalyptic number.

8442690 is an abundant number, since it is smaller than the sum of its proper divisors (11819838).

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

8442690 is a wasteful number, since it uses less digits than its factorization.

8442690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281433.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 8442690 is about 2905.6307404762. The cubic root of 8442690 is about 203.6230543998.

The spelling of 8442690 in words is "eight million, four hundred forty-two thousand, six hundred ninety".