84409574 has 4 divisors (see below), whose sum is σ = 126614364. Its totient is φ = 42204786.

The previous prime is 84409553. The next prime is 84409583. The reversal of 84409574 is 47590448.

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

It is a super-2 number, since 2×84409574² = 14249952365722952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21102392 + ... + 21102395.

It is an arithmetic number, because the mean of its divisors is an integer number (31653591).

Almost surely, 2^84409574 is an apocalyptic number.

84409574 is a deficient number, since it is larger than the sum of its proper divisors (42204790).

84409574 is a wasteful number, since it uses less digits than its factorization.

84409574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42204789.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 84409574 is about 9187.4683128705. The cubic root of 84409574 is about 438.6625606928.

The spelling of 84409574 in words is "eighty-four million, four hundred nine thousand, five hundred seventy-four".