449947397 has 2 divisors, whose sum is σ = 449947398. Its totient is φ = 449947396.

The previous prime is 449947387. The next prime is 449947439. The reversal of 449947397 is 793749944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335585761 + 114361636 = 18319^2 + 10694^2 .

It is a cyclic number.

It is not a de Polignac number, because 449947397 - 2¹⁰ = 449946373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449947307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224973698 + 224973699.

It is an arithmetic number, because the mean of its divisors is an integer number (224973699).

Almost surely, 2^449947397 is an apocalyptic number.

It is an amenable number.

449947397 is a deficient number, since it is larger than the sum of its proper divisors (1).

449947397 is an equidigital number, since it uses as much as digits as its factorization.

449947397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 56.

The square root of 449947397 is about 21211.9635347603. The cubic root of 449947397 is about 766.2795718411.

The spelling of 449947397 in words is "four hundred forty-nine million, nine hundred forty-seven thousand, three hundred ninety-seven".