84021494 has 8 divisors (see below), whose sum is σ = 126598080. Its totient is φ = 41822136.

The previous prime is 84021493. The next prime is 84021503. The reversal of 84021494 is 49412048.

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

It is a super-2 number, since 2×84021494² = 14119222907984072, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84021494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84021491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93749 + ... + 94640.

It is an arithmetic number, because the mean of its divisors is an integer number (15824760).

Almost surely, 2^84021494 is an apocalyptic number.

84021494 is a deficient number, since it is larger than the sum of its proper divisors (42576586).

84021494 is a wasteful number, since it uses less digits than its factorization.

84021494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188614.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 84021494 is about 9166.3239087434. The cubic root of 84021494 is about 437.9892653208.

The spelling of 84021494 in words is "eighty-four million, twenty-one thousand, four hundred ninety-four".