5399749 has 2 divisors, whose sum is σ = 5399750. Its totient is φ = 5399748.

The previous prime is 5399747. The next prime is 5399753. The reversal of 5399749 is 9479935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4730625 + 669124 = 2175^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 5399749 - 2¹ = 5399747 is a prime.

Together with 5399747, it forms a pair of twin primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 5399699 and 5399708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5399747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2699874 + 2699875.

It is an arithmetic number, because the mean of its divisors is an integer number (2699875).

Almost surely, 2^5399749 is an apocalyptic number.

It is an amenable number.

5399749 is a deficient number, since it is larger than the sum of its proper divisors (1).

5399749 is an equidigital number, since it uses as much as digits as its factorization.

5399749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The square root of 5399749 is about 2323.7360004958. The cubic root of 5399749 is about 175.4383459971.

The spelling of 5399749 in words is "five million, three hundred ninety-nine thousand, seven hundred forty-nine".