890805445039 has 4 divisors (see below), whose sum is σ = 891525580024. Its totient is φ = 890085310056.

The previous prime is 890805445021. The next prime is 890805445063. The reversal of 890805445039 is 930544508098.

890805445039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 890805445039 - 2³⁷ = 753366491567 is a prime.

It is a super-2 number, since 2×890805445039² (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 (890805415039) 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, 360065637 + ... + 360068110.

It is an arithmetic number, because the mean of its divisors is an integer number (222881395006).

Almost surely, 2^890805445039 is an apocalyptic number.

890805445039 is a deficient number, since it is larger than the sum of its proper divisors (720134985).

890805445039 is a wasteful number, since it uses less digits than its factorization.

890805445039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720134984.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 890805445039 in words is "eight hundred ninety billion, eight hundred five million, four hundred forty-five thousand, thirty-nine".