440734397 has 2 divisors, whose sum is σ = 440734398. Its totient is φ = 440734396.

The previous prime is 440734381. The next prime is 440734493. The reversal of 440734397 is 793437044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383141476 + 57592921 = 19574^2 + 7589^2 .

It is a cyclic number.

It is not a de Polignac number, because 440734397 - 2⁴ = 440734381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440734597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220367198 + 220367199.

It is an arithmetic number, because the mean of its divisors is an integer number (220367199).

Almost surely, 2^440734397 is an apocalyptic number.

It is an amenable number.

440734397 is a deficient number, since it is larger than the sum of its proper divisors (1).

440734397 is an equidigital number, since it uses as much as digits as its factorization.

440734397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 41.

The square root of 440734397 is about 20993.6751665829. The cubic root of 440734397 is about 761.0134201021.

The spelling of 440734397 in words is "four hundred forty million, seven hundred thirty-four thousand, three hundred ninety-seven".