84750381 has 24 divisors (see below), whose sum is σ = 127589280. Its totient is φ = 56216592.

The previous prime is 84750359. The next prime is 84750433. The reversal of 84750381 is 18305748.

It is not a de Polignac number, because 84750381 - 2⁵ = 84750349 is a prime.

It is a super-2 number, since 2×84750381² = 14365254159290322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84750181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54886 + ... + 56408.

It is an arithmetic number, because the mean of its divisors is an integer number (5316220).

Almost surely, 2^84750381 is an apocalyptic number.

84750381 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

84750381 is a deficient number, since it is larger than the sum of its proper divisors (42838899).

84750381 is a wasteful number, since it uses less digits than its factorization.

84750381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 84750381 is about 9205.9970128172. The cubic root of 84750381 is about 439.2521404102.

The spelling of 84750381 in words is "eighty-four million, seven hundred fifty thousand, three hundred eighty-one".