8402994 has 32 divisors (see below), whose sum is σ = 18986880. Its totient is φ = 2754000.

The previous prime is 8402971. The next prime is 8403029. The reversal of 8402994 is 4992048.

It is a happy number.

It is a super-2 number, since 2×8402994² = 141220616328072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2019 + ... + 4569.

It is an arithmetic number, because the mean of its divisors is an integer number (593340).

Almost surely, 2^8402994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8402994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9493440).

8402994 is an abundant number, since it is smaller than the sum of its proper divisors (10583886).

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

8402994 is a wasteful number, since it uses less digits than its factorization.

8402994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623 (or 2617 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 8402994 is about 2898.7918172922. The cubic root of 8402994 is about 203.3034200075.

The spelling of 8402994 in words is "eight million, four hundred two thousand, nine hundred ninety-four".