1293849689 has 4 divisors (see below), whose sum is σ = 1411472400. Its totient is φ = 1176226980.

The previous prime is 1293849673. The next prime is 1293849709. The reversal of 1293849689 is 9869483921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9869483921 = 11 ⋅897225811.

It is a cyclic number.

It is not a de Polignac number, because 1293849689 - 2⁴ = 1293849673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1293849619) 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, 58811339 + ... + 58811360.

It is an arithmetic number, because the mean of its divisors is an integer number (352868100).

Almost surely, 2^1293849689 is an apocalyptic number.

It is an amenable number.

1293849689 is a deficient number, since it is larger than the sum of its proper divisors (117622711).

1293849689 is a wasteful number, since it uses less digits than its factorization.

1293849689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117622710.

The product of its digits is 6718464, while the sum is 59.

The square root of 1293849689 is about 35970.1221710463. The cubic root of 1293849689 is about 1089.6690320234.

The spelling of 1293849689 in words is "one billion, two hundred ninety-three million, eight hundred forty-nine thousand, six hundred eighty-nine".