84450631 has 2 divisors, whose sum is σ = 84450632. Its totient is φ = 84450630.

The previous prime is 84450629. The next prime is 84450637. The reversal of 84450631 is 13605448.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84450631 - 2¹ = 84450629 is a prime.

It is a super-2 number, since 2×84450631² = 14263818152596322, which contains 22 as substring.

Together with 84450629, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84450593 and 84450602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84450637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42225315 + 42225316.

It is an arithmetic number, because the mean of its divisors is an integer number (42225316).

Almost surely, 2^84450631 is an apocalyptic number.

84450631 is a deficient number, since it is larger than the sum of its proper divisors (1).

84450631 is an equidigital number, since it uses as much as digits as its factorization.

84450631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 84450631 is about 9189.7024434962. The cubic root of 84450631 is about 438.7336713051.

The spelling of 84450631 in words is "eighty-four million, four hundred fifty thousand, six hundred thirty-one".