137469993 has 4 divisors (see below), whose sum is σ = 183293328. Its totient is φ = 91646660.

The previous prime is 137469991. The next prime is 137470001. The reversal of 137469993 is 399964731.

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 137469993 - 2¹ = 137469991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137469991) 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, 22911663 + ... + 22911668.

It is an arithmetic number, because the mean of its divisors is an integer number (45823332).

Almost surely, 2^137469993 is an apocalyptic number.

It is an amenable number.

137469993 is a deficient number, since it is larger than the sum of its proper divisors (45823335).

137469993 is an equidigital number, since it uses as much as digits as its factorization.

137469993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45823334.

The product of its digits is 1102248, while the sum is 51.

The square root of 137469993 is about 11724.7598269645. The cubic root of 137469993 is about 516.1025087791.

The spelling of 137469993 in words is "one hundred thirty-seven million, four hundred sixty-nine thousand, nine hundred ninety-three".