5439997 has 2 divisors, whose sum is σ = 5439998. Its totient is φ = 5439996.

The previous prime is 5439991. The next prime is 5440007. The reversal of 5439997 is 7999345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3171961 + 2268036 = 1781^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 5439997 - 2⁷ = 5439869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5439991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2719998 + 2719999.

It is an arithmetic number, because the mean of its divisors is an integer number (2719999).

Almost surely, 2^5439997 is an apocalyptic number.

It is an amenable number.

5439997 is a deficient number, since it is larger than the sum of its proper divisors (1).

5439997 is an equidigital number, since it uses as much as digits as its factorization.

5439997 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 5439997 is about 2332.3801148183. The cubic root of 5439997 is about 175.8731545567.

The spelling of 5439997 in words is "five million, four hundred thirty-nine thousand, nine hundred ninety-seven".