103921397 has 4 divisors (see below), whose sum is σ = 104158560. Its totient is φ = 103684236.

The previous prime is 103921379. The next prime is 103921403. The reversal of 103921397 is 793129301.

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.

It is a cyclic number.

It is not a de Polignac number, because 103921397 - 2¹⁶ = 103855861 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 (103921327) 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, 117923 + ... + 118800.

It is an arithmetic number, because the mean of its divisors is an integer number (26039640).

Almost surely, 2^103921397 is an apocalyptic number.

It is an amenable number.

103921397 is a deficient number, since it is larger than the sum of its proper divisors (237163).

103921397 is an equidigital number, since it uses as much as digits as its factorization.

103921397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237162.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 103921397 is about 10194.1844695885. The cubic root of 103921397 is about 470.1484320681.

The spelling of 103921397 in words is "one hundred three million, nine hundred twenty-one thousand, three hundred ninety-seven".