1049491879 has 2 divisors, whose sum is σ = 1049491880. Its totient is φ = 1049491878.

The previous prime is 1049491867. The next prime is 1049491897. The reversal of 1049491879 is 9781949401.

Together with next prime (1049491897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1049491879 is a prime.

It is a super-3 number, since 3×1049491879³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1049491279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524745939 + 524745940.

It is an arithmetic number, because the mean of its divisors is an integer number (524745940).

Almost surely, 2^1049491879 is an apocalyptic number.

1049491879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049491879 is an equidigital number, since it uses as much as digits as its factorization.

1049491879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 1049491879 is about 32395.8620660108. The cubic root of 1049491879 is about 1016.2323772391.

The spelling of 1049491879 in words is "one billion, forty-nine million, four hundred ninety-one thousand, eight hundred seventy-nine".