1047687423 has 8 divisors (see below), whose sum is σ = 1397089200. Its totient is φ = 698371968.

The previous prime is 1047687419. The next prime is 1047687427. The reversal of 1047687423 is 3247867401.

It is a Cunningham number, because it is equal to 32368²-1.

It is an interprime number because it is at equal distance from previous prime (1047687419) and next prime (1047687427).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1047687423 - 2² = 1047687419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047687427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16183 + ... + 48551.

It is an arithmetic number, because the mean of its divisors is an integer number (174636150).

Almost surely, 2^1047687423 is an apocalyptic number.

1047687423 is a deficient number, since it is larger than the sum of its proper divisors (349401777).

1047687423 is a wasteful number, since it uses less digits than its factorization.

1047687423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43161.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 1047687423 is about 32367.9999845526. Note that the first 4 decimals coincide. The cubic root of 1047687423 is about 1015.6496194906.

The spelling of 1047687423 in words is "one billion, forty-seven million, six hundred eighty-seven thousand, four hundred twenty-three".