84781474 has 4 divisors (see below), whose sum is σ = 127172214. Its totient is φ = 42390736.

The previous prime is 84781453. The next prime is 84781483. The reversal of 84781474 is 47418748.

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

It can be written as a sum of positive squares in only one way, i.e., 48094225 + 36687249 = 6935^2 + 6057^2 .

It is a super-2 number, since 2×84781474² = 14375796667225352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84781474.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21195367 + ... + 21195370.

Almost surely, 2^84781474 is an apocalyptic number.

84781474 is a deficient number, since it is larger than the sum of its proper divisors (42390740).

84781474 is a wasteful number, since it uses less digits than its factorization.

84781474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42390739.

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

The square root of 84781474 is about 9207.6855941110. The cubic root of 84781474 is about 439.3058510710.

The spelling of 84781474 in words is "eighty-four million, seven hundred eighty-one thousand, four hundred seventy-four".