84874417 has 4 divisors (see below), whose sum is σ = 84893220. Its totient is φ = 84855616.

The previous prime is 84874409. The next prime is 84874429. The reversal of 84874417 is 71447848.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24641296 + 60233121 = 4964^2 + 7761^2 .

It is a cyclic number.

It is not a de Polignac number, because 84874417 - 2³ = 84874409 is a prime.

It is a super-2 number, since 2×84874417² = 14407333322179778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84874477) 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, 1893 + ... + 13165.

It is an arithmetic number, because the mean of its divisors is an integer number (21223305).

Almost surely, 2^84874417 is an apocalyptic number.

It is an amenable number.

84874417 is a deficient number, since it is larger than the sum of its proper divisors (18803).

84874417 is a wasteful number, since it uses less digits than its factorization.

84874417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18802.

The product of its digits is 200704, while the sum is 43.

The square root of 84874417 is about 9212.7312454017. The cubic root of 84874417 is about 439.4663243857.

The spelling of 84874417 in words is "eighty-four million, eight hundred seventy-four thousand, four hundred seventeen".