84258401 has 2 divisors, whose sum is σ = 84258402. Its totient is φ = 84258400.

The previous prime is 84258389. The next prime is 84258437. The reversal of 84258401 is 10485248.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78304801 + 5953600 = 8849^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 84258401 - 2¹⁰ = 84257377 is a prime.

It is not a weakly prime, because it can be changed into another prime (84258481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42129200 + 42129201.

It is an arithmetic number, because the mean of its divisors is an integer number (42129201).

Almost surely, 2^84258401 is an apocalyptic number.

It is an amenable number.

84258401 is a deficient number, since it is larger than the sum of its proper divisors (1).

84258401 is an equidigital number, since it uses as much as digits as its factorization.

84258401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 84258401 is about 9179.2374955657. The cubic root of 84258401 is about 438.4005305312.

The spelling of 84258401 in words is "eighty-four million, two hundred fifty-eight thousand, four hundred one".