1026729047 has 4 divisors (see below), whose sum is σ = 1026898296. Its totient is φ = 1026559800.

The previous prime is 1026729043. The next prime is 1026729061. The reversal of 1026729047 is 7409276201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1026729047 - 2² = 1026729043 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 1026729047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026729043) 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, 75173 + ... + 87774.

It is an arithmetic number, because the mean of its divisors is an integer number (256724574).

Almost surely, 2^1026729047 is an apocalyptic number.

1026729047 is a deficient number, since it is larger than the sum of its proper divisors (169249).

1026729047 is an equidigital number, since it uses as much as digits as its factorization.

1026729047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169248.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1026729047 is about 32042.6129864591. The cubic root of 1026729047 is about 1008.8314580794.

The spelling of 1026729047 in words is "one billion, twenty-six million, seven hundred twenty-nine thousand, forty-seven".