789897149 has 4 divisors (see below), whose sum is σ = 789995136. Its totient is φ = 789799164.

The previous prime is 789897131. The next prime is 789897169. The reversal of 789897149 is 941798987.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941798987 = 41 ⋅22970707.

It is a cyclic number.

It is not a de Polignac number, because 789897149 - 2¹² = 789893053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 789897091 and 789897100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789897169) 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, 35699 + ... + 53424.

It is an arithmetic number, because the mean of its divisors is an integer number (197498784).

Almost surely, 2^789897149 is an apocalyptic number.

It is an amenable number.

789897149 is a deficient number, since it is larger than the sum of its proper divisors (97987).

789897149 is an equidigital number, since it uses as much as digits as its factorization.

789897149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97986.

The product of its digits is 9144576, while the sum is 62.

The square root of 789897149 is about 28105.1089483745. The cubic root of 789897149 is about 924.3934271110.

The spelling of 789897149 in words is "seven hundred eighty-nine million, eight hundred ninety-seven thousand, one hundred forty-nine".