5436397639 has 2 divisors, whose sum is σ = 5436397640. Its totient is φ = 5436397638.

The previous prime is 5436397633. The next prime is 5436397657. The reversal of 5436397639 is 9367936345.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5436397639 - 2⁷ = 5436397511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5436397639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5436397633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2718198819 + 2718198820.

It is an arithmetic number, because the mean of its divisors is an integer number (2718198820).

Almost surely, 2^5436397639 is an apocalyptic number.

5436397639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5436397639 is an equidigital number, since it uses as much as digits as its factorization.

5436397639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 55.

The square root of 5436397639 is about 73731.9309322630. The cubic root of 5436397639 is about 1758.3435731475.

The spelling of 5436397639 in words is "five billion, four hundred thirty-six million, three hundred ninety-seven thousand, six hundred thirty-nine".