1293701989 has 4 divisors (see below), whose sum is σ = 1369802124. Its totient is φ = 1217601856.

The previous prime is 1293701971. The next prime is 1293702017. The reversal of 1293701989 is 9891073921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9891073921 = 1231 ⋅8034991.

It can be written as a sum of positive squares in 2 ways, for example, as 1051899489 + 241802500 = 32433^2 + 15550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1293701989 - 2⁹ = 1293701477 is a prime.

It is a super-2 number, since 2×1293701989² = 3347329672685112242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291701989) 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, 38050042 + ... + 38050075.

It is an arithmetic number, because the mean of its divisors is an integer number (342450531).

Almost surely, 2^1293701989 is an apocalyptic number.

It is an amenable number.

1293701989 is a deficient number, since it is larger than the sum of its proper divisors (76100135).

1293701989 is an equidigital number, since it uses as much as digits as its factorization.

1293701989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76100134.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 1293701989 is about 35968.0690196179. The cubic root of 1293701989 is about 1089.6275665575.

The spelling of 1293701989 in words is "one billion, two hundred ninety-three million, seven hundred one thousand, nine hundred eighty-nine".