84380407 has 2 divisors, whose sum is σ = 84380408. Its totient is φ = 84380406.

The previous prime is 84380393. The next prime is 84380423. The reversal of 84380407 is 70408348.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84380407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84380467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42190203 + 42190204.

It is an arithmetic number, because the mean of its divisors is an integer number (42190204).

Almost surely, 2^84380407 is an apocalyptic number.

84380407 is a deficient number, since it is larger than the sum of its proper divisors (1).

84380407 is an equidigital number, since it uses as much as digits as its factorization.

84380407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 84380407 is about 9185.8808505227. The cubic root of 84380407 is about 438.6120295178.

The spelling of 84380407 in words is "eighty-four million, three hundred eighty thousand, four hundred seven".