740889749 has 2 divisors, whose sum is σ = 740889750. Its totient is φ = 740889748.

The previous prime is 740889719. The next prime is 740889769. The reversal of 740889749 is 947988047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 740819524 + 70225 = 27218^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 740889749 - 2⁸ = 740889493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 740889694 and 740889703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740889719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370444874 + 370444875.

It is an arithmetic number, because the mean of its divisors is an integer number (370444875).

Almost surely, 2^740889749 is an apocalyptic number.

It is an amenable number.

740889749 is a deficient number, since it is larger than the sum of its proper divisors (1).

740889749 is an equidigital number, since it uses as much as digits as its factorization.

740889749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 740889749 is about 27219.2900164571. The cubic root of 740889749 is about 904.8665387272.

The spelling of 740889749 in words is "seven hundred forty million, eight hundred eighty-nine thousand, seven hundred forty-nine".