1046809958399 has 4 divisors (see below), whose sum is σ = 1046814976536. Its totient is φ = 1046804940264.

The previous prime is 1046809958387. The next prime is 1046809958473. The reversal of 1046809958399 is 9938599086401.

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 1046809958399 - 2²⁰ = 1046808909823 is a prime.

It is a super-2 number, since 2×1046809958399² (a number of 25 digits) 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 (1046809958699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181944 + ... + 2618109.

It is an arithmetic number, because the mean of its divisors is an integer number (261703744134).

Almost surely, 2^{1046809958399} is an apocalyptic number.

1046809958399 is a deficient number, since it is larger than the sum of its proper divisors (5018137).

1046809958399 is an equidigital number, since it uses as much as digits as its factorization.

1046809958399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5018136.

The product of its (nonzero) digits is 151165440, while the sum is 71.

The spelling of 1046809958399 in words is "one trillion, forty-six billion, eight hundred nine million, nine hundred fifty-eight thousand, three hundred ninety-nine".