137216899 has 4 divisors (see below), whose sum is σ = 137244136. Its totient is φ = 137189664.

The previous prime is 137216897. The next prime is 137216903. The reversal of 137216899 is 998612731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137216899 - 2¹ = 137216897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137216897) 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, 3609 + ... + 16954.

It is an arithmetic number, because the mean of its divisors is an integer number (34311034).

Almost surely, 2^137216899 is an apocalyptic number.

137216899 is a deficient number, since it is larger than the sum of its proper divisors (27237).

137216899 is an equidigital number, since it uses as much as digits as its factorization.

137216899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27236.

The product of its digits is 163296, while the sum is 46.

The square root of 137216899 is about 11713.9617124182. The cubic root of 137216899 is about 515.7855846030.

The spelling of 137216899 in words is "one hundred thirty-seven million, two hundred sixteen thousand, eight hundred ninety-nine".