1049397893 has 4 divisors (see below), whose sum is σ = 1049462700. Its totient is φ = 1049333088.

The previous prime is 1049397889. The next prime is 1049397941. The reversal of 1049397893 is 3987939401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 870427009 + 178970884 = 29503^2 + 13378^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049397893 - 2² = 1049397889 is a prime.

It is a super-2 number, since 2×1049397893² = 2202471875665678898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049397863) 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, 15083 + ... + 48231.

It is an arithmetic number, because the mean of its divisors is an integer number (262365675).

Almost surely, 2^1049397893 is an apocalyptic number.

It is an amenable number.

1049397893 is a deficient number, since it is larger than the sum of its proper divisors (64807).

1049397893 is an equidigital number, since it uses as much as digits as its factorization.

1049397893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64806.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 1049397893 is about 32394.4114470382. The cubic root of 1049397893 is about 1016.2020405052.

The spelling of 1049397893 in words is "one billion, forty-nine million, three hundred ninety-seven thousand, eight hundred ninety-three".