984406381 has 8 divisors (see below), whose sum is σ = 1126564160. Its totient is φ = 842630688.

The previous prime is 984406309. The next prime is 984406441. The reversal of 984406381 is 183604489.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 984406381 - 2¹⁷ = 984275309 is a prime.

It is a super-2 number, since 2×984406381² = 1938111845907034322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984406081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89976 + ... + 100321.

It is an arithmetic number, because the mean of its divisors is an integer number (140820520).

Almost surely, 2^984406381 is an apocalyptic number.

It is an amenable number.

984406381 is a deficient number, since it is larger than the sum of its proper divisors (142157779).

984406381 is a wasteful number, since it uses less digits than its factorization.

984406381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191043.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 984406381 is about 31375.2510906287. The cubic root of 984406381 is about 994.7748725957.

The spelling of 984406381 in words is "nine hundred eighty-four million, four hundred six thousand, three hundred eighty-one".