109736991 has 64 divisors (see below), whose sum is σ = 203750400. Its totient is φ = 56827008.

The previous prime is 109736969. The next prime is 109737011. The reversal of 109736991 is 199637901.

It is not a de Polignac number, because 109736991 - 2¹¹ = 109734943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109732991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 144585 + ... + 145341.

It is an arithmetic number, because the mean of its divisors is an integer number (3183600).

Almost surely, 2^109736991 is an apocalyptic number.

109736991 is a deficient number, since it is larger than the sum of its proper divisors (94013409).

109736991 is a wasteful number, since it uses less digits than its factorization.

109736991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 109736991 is about 10475.5425157841. The cubic root of 109736991 is about 478.7598062377.

The spelling of 109736991 in words is "one hundred nine million, seven hundred thirty-six thousand, nine hundred ninety-one".