108921739 has 8 divisors (see below), whose sum is σ = 110737152. Its totient is φ = 107114280.

The previous prime is 108921727. The next prime is 108921749. The reversal of 108921739 is 937129801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108921739 - 2¹³ = 108913547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108921749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29722 + ... + 33184.

It is an arithmetic number, because the mean of its divisors is an integer number (13842144).

Almost surely, 2^108921739 is an apocalyptic number.

108921739 is a deficient number, since it is larger than the sum of its proper divisors (1815413).

108921739 is an equidigital number, since it uses as much as digits as its factorization.

108921739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 108921739 is about 10436.5578137622. The cubic root of 108921739 is about 477.5712661008.

The spelling of 108921739 in words is "one hundred eight million, nine hundred twenty-one thousand, seven hundred thirty-nine".