1298429953 has 4 divisors (see below), whose sum is σ = 1298530260. Its totient is φ = 1298329648.

The previous prime is 1298429921. The next prime is 1298429959. The reversal of 1298429953 is 3599248921.

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 509269489 + 789160464 = 22567^2 + 28092^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298429953 - 2⁵ = 1298429921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1298429953.

It is not an unprimeable number, because it can be changed into a prime (1298429959) 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, 27250 + ... + 57787.

It is an arithmetic number, because the mean of its divisors is an integer number (324632565).

Almost surely, 2^1298429953 is an apocalyptic number.

It is an amenable number.

1298429953 is a deficient number, since it is larger than the sum of its proper divisors (100307).

1298429953 is an equidigital number, since it uses as much as digits as its factorization.

1298429953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100306.

The product of its digits is 1399680, while the sum is 52.

The square root of 1298429953 is about 36033.7335423350. The cubic root of 1298429953 is about 1090.9533373138.

The spelling of 1298429953 in words is "one billion, two hundred ninety-eight million, four hundred twenty-nine thousand, nine hundred fifty-three".