84043971 has 24 divisors (see below), whose sum is σ = 140225904. Its totient is φ = 47938560.

The previous prime is 84043963. The next prime is 84044003. The reversal of 84043971 is 17934048.

It is a happy number.

It is not a de Polignac number, because 84043971 - 2³ = 84043963 is a prime.

It is a super-2 number, since 2×84043971² = 14126778122897682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84043931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23286 + ... + 26651.

It is an arithmetic number, because the mean of its divisors is an integer number (5842746).

Almost surely, 2^84043971 is an apocalyptic number.

84043971 is a deficient number, since it is larger than the sum of its proper divisors (56181933).

84043971 is a wasteful number, since it uses less digits than its factorization.

84043971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49971 (or 49968 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 84043971 is about 9167.5498907833. The cubic root of 84043971 is about 438.0283180540.

The spelling of 84043971 in words is "eighty-four million, forty-three thousand, nine hundred seventy-one".