84401143 has 4 divisors (see below), whose sum is σ = 86196960. Its totient is φ = 82605328.

The previous prime is 84401089. The next prime is 84401147. The reversal of 84401143 is 34110448.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84401143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84401147) 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, 897838 + ... + 897931.

It is an arithmetic number, because the mean of its divisors is an integer number (21549240).

Almost surely, 2^84401143 is an apocalyptic number.

84401143 is a deficient number, since it is larger than the sum of its proper divisors (1795817).

84401143 is a wasteful number, since it uses less digits than its factorization.

84401143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795816.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 84401143 is about 9187.0094698982. The cubic root of 84401143 is about 438.6479553702.

The spelling of 84401143 in words is "eighty-four million, four hundred one thousand, one hundred forty-three".