84450397 has 4 divisors (see below), whose sum is σ = 84956256. Its totient is φ = 83944540.

The previous prime is 84450389. The next prime is 84450403. The reversal of 84450397 is 79305448.

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 84450397 - 2³ = 84450389 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84450337) 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, 252679 + ... + 253012.

It is an arithmetic number, because the mean of its divisors is an integer number (21239064).

Almost surely, 2^84450397 is an apocalyptic number.

It is an amenable number.

84450397 is a deficient number, since it is larger than the sum of its proper divisors (505859).

84450397 is a wasteful number, since it uses less digits than its factorization.

84450397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505858.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 84450397 is about 9189.6897118456. The cubic root of 84450397 is about 438.7332660831.

The spelling of 84450397 in words is "eighty-four million, four hundred fifty thousand, three hundred ninety-seven".