109389537 has 24 divisors (see below), whose sum is σ = 164946600. Its totient is φ = 69769728.

The previous prime is 109389521. The next prime is 109389557. The reversal of 109389537 is 735983901.

It is a happy number.

109389537 is a `hidden beast` number, since 109 + 3 + 8 + 9 + 537 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 207936 + 109181601 = 456^2 + 10449^2 .

It is not a de Polignac number, because 109389537 - 2⁴ = 109389521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109389492 and 109389501.

It is not an unprimeable number, because it can be changed into a prime (109389557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27639 + ... + 31347.

It is an arithmetic number, because the mean of its divisors is an integer number (6872775).

Almost surely, 2^109389537 is an apocalyptic number.

It is an amenable number.

109389537 is a deficient number, since it is larger than the sum of its proper divisors (55557063).

109389537 is a wasteful number, since it uses less digits than its factorization.

109389537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857 (or 3854 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 109389537 is about 10458.9453101161. The cubic root of 109389537 is about 478.2539820159.

The spelling of 109389537 in words is "one hundred nine million, three hundred eighty-nine thousand, five hundred thirty-seven".