123357889 has 16 divisors (see below), whose sum is σ = 130712400. Its totient is φ = 116259840.

The previous prime is 123357881. The next prime is 123357917. The reversal of 123357889 is 988753321.

It can be written as a sum of positive squares in 8 ways, for example, as 1034289 + 122323600 = 1017^2 + 11060^2 .

It is a cyclic number.

It is not a de Polignac number, because 123357889 - 2³ = 123357881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (123357881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353287 + ... + 353635.

It is an arithmetic number, because the mean of its divisors is an integer number (8169525).

Almost surely, 2^123357889 is an apocalyptic number.

It is an amenable number.

123357889 is a deficient number, since it is larger than the sum of its proper divisors (7354511).

123357889 is a wasteful number, since it uses less digits than its factorization.

123357889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660.

The product of its digits is 362880, while the sum is 46.

The square root of 123357889 is about 11106.6596688653. The cubic root of 123357889 is about 497.8008604175.

The spelling of 123357889 in words is "one hundred twenty-three million, three hundred fifty-seven thousand, eight hundred eighty-nine".