8454139 has 2 divisors, whose sum is σ = 8454140. Its totient is φ = 8454138.

The previous prime is 8454079. The next prime is 8454143. The reversal of 8454139 is 9314548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8454139 - 2⁷ = 8454011 is a prime.

It is not a weakly prime, because it can be changed into another prime (8454239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4227069 + 4227070.

It is an arithmetic number, because the mean of its divisors is an integer number (4227070).

Almost surely, 2^8454139 is an apocalyptic number.

8454139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8454139 is an equidigital number, since it uses as much as digits as its factorization.

8454139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 8454139 is about 2907.6002132343. The cubic root of 8454139 is about 203.7150561725.

The spelling of 8454139 in words is "eight million, four hundred fifty-four thousand, one hundred thirty-nine".