740838247 has 2 divisors, whose sum is σ = 740838248. Its totient is φ = 740838246.

The previous prime is 740838239. The next prime is 740838313. The reversal of 740838247 is 742838047.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 740838247 - 2³ = 740838239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740838547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370419123 + 370419124.

It is an arithmetic number, because the mean of its divisors is an integer number (370419124).

Almost surely, 2^740838247 is an apocalyptic number.

740838247 is a deficient number, since it is larger than the sum of its proper divisors (1).

740838247 is an equidigital number, since it uses as much as digits as its factorization.

740838247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 740838247 is about 27218.3439430102. The cubic root of 740838247 is about 904.8455713626.

The spelling of 740838247 in words is "seven hundred forty million, eight hundred thirty-eight thousand, two hundred forty-seven".