103894981 has 4 divisors (see below), whose sum is σ = 107246464. Its totient is φ = 100543500.

The previous prime is 103894937. The next prime is 103894991. The reversal of 103894981 is 189498301.

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: 189498301 = 439 ⋅431659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103894981 is a prime.

It is a super-2 number, since 2×103894981² = 21588334153980722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103894991) 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, 1675695 + ... + 1675756.

It is an arithmetic number, because the mean of its divisors is an integer number (26811616).

Almost surely, 2^103894981 is an apocalyptic number.

It is an amenable number.

103894981 is a deficient number, since it is larger than the sum of its proper divisors (3351483).

103894981 is an equidigital number, since it uses as much as digits as its factorization.

103894981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351482.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 103894981 is about 10192.8887465723. Note that the first 3 decimals coincide. The cubic root of 103894981 is about 470.1085926837.

The spelling of 103894981 in words is "one hundred three million, eight hundred ninety-four thousand, nine hundred eighty-one".