109461993 has 4 divisors (see below), whose sum is σ = 145949328. Its totient is φ = 72974660.

The previous prime is 109461973. The next prime is 109462007. The reversal of 109461993 is 399164901.

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 109461993 - 2²¹ = 107364841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109461943) 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, 18243663 + ... + 18243668.

It is an arithmetic number, because the mean of its divisors is an integer number (36487332).

Almost surely, 2^109461993 is an apocalyptic number.

It is an amenable number.

109461993 is a deficient number, since it is larger than the sum of its proper divisors (36487335).

109461993 is an equidigital number, since it uses as much as digits as its factorization.

109461993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36487334.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 109461993 is about 10462.4085659087. The cubic root of 109461993 is about 478.3595519008.

The spelling of 109461993 in words is "one hundred nine million, four hundred sixty-one thousand, nine hundred ninety-three".