84039001 has 4 divisors (see below), whose sum is σ = 84064932. Its totient is φ = 84013072.

The previous prime is 84038893. The next prime is 84039017. The reversal of 84039001 is 10093048.

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 15397776 + 68641225 = 3924^2 + 8285^2 .

It is a cyclic number.

It is not a de Polignac number, because 84039001 - 2¹⁵ = 84006233 is a prime.

It is a super-4 number, since 4×84039001⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84039091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7270 + ... + 14863.

It is an arithmetic number, because the mean of its divisors is an integer number (21016233).

Almost surely, 2^84039001 is an apocalyptic number.

It is an amenable number.

84039001 is a deficient number, since it is larger than the sum of its proper divisors (25931).

84039001 is a wasteful number, since it uses less digits than its factorization.

84039001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25930.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 84039001 is about 9167.2788219842. The cubic root of 84039001 is about 438.0196835118.

The spelling of 84039001 in words is "eighty-four million, thirty-nine thousand, one".