1047399 has 4 divisors (see below), whose sum is σ = 1396536. Its totient is φ = 698264.

The previous prime is 1047391. The next prime is 1047419. The reversal of 1047399 is 9937401.

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 1047399 - 2³ = 1047391 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047391) 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, 174564 + ... + 174569.

It is an arithmetic number, because the mean of its divisors is an integer number (349134).

2^1047399 is an apocalyptic number.

1047399 is a deficient number, since it is larger than the sum of its proper divisors (349137).

1047399 is an equidigital number, since it uses as much as digits as its factorization.

1047399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349136.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1047399 is about 1023.4251316047. The cubic root of 1047399 is about 101.5556409885. Note that the first 3 decimals are identical.

It can be divided in two parts, 104 and 7399, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 1047399 in words is "one million, forty-seven thousand, three hundred ninety-nine".