1049799251 has 4 divisors (see below), whose sum is σ = 1050836592. Its totient is φ = 1048761912.

The previous prime is 1049799239. The next prime is 1049799259. The reversal of 1049799251 is 1529979401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1529979401 = 389 ⋅3933109.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1049799251 is a prime.

It is a super-2 number, since 2×1049799251² = 2204156934800322002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1049799196 and 1049799205.

It is not an unprimeable number, because it can be changed into a prime (1049799259) 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, 517151 + ... + 519176.

It is an arithmetic number, because the mean of its divisors is an integer number (262709148).

Almost surely, 2^1049799251 is an apocalyptic number.

1049799251 is a deficient number, since it is larger than the sum of its proper divisors (1037341).

1049799251 is a wasteful number, since it uses less digits than its factorization.

1049799251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037340.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 1049799251 is about 32400.6057196467. The cubic root of 1049799251 is about 1016.3315779078.

The spelling of 1049799251 in words is "one billion, forty-nine million, seven hundred ninety-nine thousand, two hundred fifty-one".