84674940 has 144 divisors (see below), whose sum is σ = 279925632. Its totient is φ = 19065984.

The previous prime is 84674927. The next prime is 84674969. The reversal of 84674940 is 4947648.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 84674892 and 84674901.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 243847 + ... + 244193.

It is an arithmetic number, because the mean of its divisors is an integer number (1943928).

Almost surely, 2^84674940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84674940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139962816).

84674940 is an abundant number, since it is smaller than the sum of its proper divisors (195250692).

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

84674940 is a wasteful number, since it uses less digits than its factorization.

84674940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 84674940 is about 9201.8987171127. The cubic root of 84674940 is about 439.1217675130.

The spelling of 84674940 in words is "eighty-four million, six hundred seventy-four thousand, nine hundred forty".