1299521098 has 8 divisors (see below), whose sum is σ = 1986060708. Its totient is φ = 637500864.

The previous prime is 1299521071. The next prime is 1299521161. The reversal of 1299521098 is 8901259921.

It can be written as a sum of positive squares in 2 ways, for example, as 1229413969 + 70107129 = 35063^2 + 8373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6129711 + ... + 6129922.

Almost surely, 2^1299521098 is an apocalyptic number.

1299521098 is a deficient number, since it is larger than the sum of its proper divisors (686539610).

1299521098 is a wasteful number, since it uses less digits than its factorization.

1299521098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12259688.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 1299521098 is about 36048.8709670636. The cubic root of 1299521098 is about 1091.2588485921.

The spelling of 1299521098 in words is "one billion, two hundred ninety-nine million, five hundred twenty-one thousand, ninety-eight".