103446389 has 4 divisors (see below), whose sum is σ = 105647424. Its totient is φ = 101245356.

The previous prime is 103446367. The next prime is 103446401. The reversal of 103446389 is 983644301.

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: 983644301 = 29 ⋅33918769.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103446389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103446319) 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, 1100447 + ... + 1100540.

It is an arithmetic number, because the mean of its divisors is an integer number (26411856).

Almost surely, 2^103446389 is an apocalyptic number.

It is an amenable number.

103446389 is a deficient number, since it is larger than the sum of its proper divisors (2201035).

103446389 is an equidigital number, since it uses as much as digits as its factorization.

103446389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201034.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 103446389 is about 10170.8597964970. The cubic root of 103446389 is about 469.4310135853.

The spelling of 103446389 in words is "one hundred three million, four hundred forty-six thousand, three hundred eighty-nine".