989440473 has 32 divisors (see below), whose sum is σ = 1627545600. Its totient is φ = 522156096.

The previous prime is 989440429. The next prime is 989440483. The reversal of 989440473 is 374044989.

It is not a de Polignac number, because 989440473 - 2¹⁰ = 989439449 is a prime.

It is a super-2 number, since 2×989440473² = 1957984899220927458, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (989440483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21313 + ... + 49326.

It is an arithmetic number, because the mean of its divisors is an integer number (50860800).

Almost surely, 2^989440473 is an apocalyptic number.

It is an amenable number.

989440473 is a deficient number, since it is larger than the sum of its proper divisors (638105127).

989440473 is a wasteful number, since it uses less digits than its factorization.

989440473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70701.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 989440473 is about 31455.3727207293. The cubic root of 989440473 is about 996.4676951804.

The spelling of 989440473 in words is "nine hundred eighty-nine million, four hundred forty thousand, four hundred seventy-three".