739649 has 2 divisors, whose sum is σ = 739650. Its totient is φ = 739648.

The previous prime is 739637. The next prime is 739693. The reversal of 739649 is 946937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 49 = 860^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 739649 - 2⁴ = 739633 is a prime.

It is not a weakly prime, because it can be changed into another prime (739699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369824 + 369825.

It is an arithmetic number, because the mean of its divisors is an integer number (369825).

2⁷³⁹⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

739649 is a deficient number, since it is larger than the sum of its proper divisors (1).

739649 is an equidigital number, since it uses as much as digits as its factorization.

739649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 739649 is about 860.0284879003. The cubic root of 739649 is about 90.4361137591.

It can be divided in two parts, 7396 and 49, that multiplied together give a square (362404 = 602²).

The spelling of 739649 in words is "seven hundred thirty-nine thousand, six hundred forty-nine".