993257449 has 4 divisors (see below), whose sum is σ = 1009540420. Its totient is φ = 976974480.

The previous prime is 993257437. The next prime is 993257467. The reversal of 993257449 is 944752399.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159896025 + 833361424 = 12645^2 + 28868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993257449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993257396 and 993257405.

It is not an unprimeable number, because it can be changed into a prime (993257479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8141394 + ... + 8141515.

It is an arithmetic number, because the mean of its divisors is an integer number (252385105).

Almost surely, 2^993257449 is an apocalyptic number.

It is an amenable number.

993257449 is a deficient number, since it is larger than the sum of its proper divisors (16282971).

993257449 is a wasteful number, since it uses less digits than its factorization.

993257449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16282970.

The product of its digits is 2449440, while the sum is 52.

The square root of 993257449 is about 31515.9871969767. The cubic root of 993257449 is about 997.7474126603.

The spelling of 993257449 in words is "nine hundred ninety-three million, two hundred fifty-seven thousand, four hundred forty-nine".