84401537 has 4 divisors (see below), whose sum is σ = 92074416. Its totient is φ = 76728660.

The previous prime is 84401521. The next prime is 84401539. The reversal of 84401537 is 73510448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84401537 - 2⁴ = 84401521 is a prime.

It is a super-3 number, since 3×84401537³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84401539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3836423 + ... + 3836444.

It is an arithmetic number, because the mean of its divisors is an integer number (23018604).

Almost surely, 2^84401537 is an apocalyptic number.

It is an amenable number.

84401537 is a deficient number, since it is larger than the sum of its proper divisors (7672879).

84401537 is a wasteful number, since it uses less digits than its factorization.

84401537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7672878.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 84401537 is about 9187.0309131950. The cubic root of 84401537 is about 438.6486379321.

The spelling of 84401537 in words is "eighty-four million, four hundred one thousand, five hundred thirty-seven".