5401439 has 2 divisors, whose sum is σ = 5401440.
Its totient is φ = 5401438.
The previous prime is 5401433. The next prime is 5401447. The reversal of 5401439 is 9341045.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 5401439 - 220 = 4352863 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (5401433) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700719 + 2700720.
It is an arithmetic number, because the mean of its divisors is an integer number (2700720).
Almost surely, 25401439 is an apocalyptic number.
5401439 is a deficient number, since it is larger than the sum of its proper divisors (1).
5401439 is an equidigital number, since it uses as much as digits as its factorization.
5401439 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2160, while the sum is 26.
The square root of 5401439 is about 2324.0996106019.
The cubic root of 5401439 is about 175.4566468403.
The spelling of 5401439 in words is "five million, four hundred one thousand, four hundred thirty-nine".