1290889347 has 12 divisors (see below), whose sum is σ = 1891882440. Its totient is φ = 782356960.

The previous prime is 1290889331. The next prime is 1290889351. The reversal of 1290889347 is 7439880921.

It is not a de Polignac number, because 1290889347 - 2⁴ = 1290889331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1290889347.

It is not an unprimeable number, because it can be changed into a prime (1290889307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1777722 + ... + 1778447.

It is an arithmetic number, because the mean of its divisors is an integer number (157656870).

Almost surely, 2^1290889347 is an apocalyptic number.

1290889347 is a deficient number, since it is larger than the sum of its proper divisors (600993093).

1290889347 is a wasteful number, since it uses less digits than its factorization.

1290889347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556194 (or 3556183 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1290889347 is about 35928.9485930218. The cubic root of 1290889347 is about 1088.8373392394.

The spelling of 1290889347 in words is "one billion, two hundred ninety million, eight hundred eighty-nine thousand, three hundred forty-seven".