985406290 has 32 divisors (see below), whose sum is σ = 1936327680. Its totient is φ = 358080000.

The previous prime is 985406287. The next prime is 985406297. The reversal of 985406290 is 92604589.

It is not an unprimeable number, because it can be changed into a prime (985406297) 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, 244290 + ... + 248290.

It is an arithmetic number, because the mean of its divisors is an integer number (60510240).

Almost surely, 2^985406290 is an apocalyptic number.

985406290 is a deficient number, since it is larger than the sum of its proper divisors (950921390).

985406290 is a wasteful number, since it uses less digits than its factorization.

985406290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6258.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 985406290 is about 31391.1817235350. The cubic root of 985406290 is about 995.1115722129. Note that the first 3 decimals are identical.

The spelling of 985406290 in words is "nine hundred eighty-five million, four hundred six thousand, two hundred ninety".