117869537 has 2 divisors, whose sum is σ = 117869538. Its totient is φ = 117869536.

The previous prime is 117869519. The next prime is 117869567. The reversal of 117869537 is 735968711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69372241 + 48497296 = 8329^2 + 6964^2 .

It is an emirp because it is prime and its reverse (735968711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117869537 - 2⁶ = 117869473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117869491 and 117869500.

It is not a weakly prime, because it can be changed into another prime (117869567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58934768 + 58934769.

It is an arithmetic number, because the mean of its divisors is an integer number (58934769).

Almost surely, 2^117869537 is an apocalyptic number.

It is an amenable number.

117869537 is a deficient number, since it is larger than the sum of its proper divisors (1).

117869537 is an equidigital number, since it uses as much as digits as its factorization.

117869537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 47.

The square root of 117869537 is about 10856.7737841405. The cubic root of 117869537 is about 490.3059827044.

The spelling of 117869537 in words is "one hundred seventeen million, eight hundred sixty-nine thousand, five hundred thirty-seven".