137473393 has 4 divisors (see below), whose sum is σ = 137507328. Its totient is φ = 137439460.

The previous prime is 137473367. The next prime is 137473397. The reversal of 137473393 is 393374731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 393374731 = 16229 ⋅24239.

It is a cyclic number.

It is not a de Polignac number, because 137473393 - 2¹³ = 137465201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137473397) 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 in 3 ways as a sum of consecutive naturals, for example, 9913 + ... + 19318.

It is an arithmetic number, because the mean of its divisors is an integer number (34376832).

Almost surely, 2^137473393 is an apocalyptic number.

It is an amenable number.

137473393 is a deficient number, since it is larger than the sum of its proper divisors (33935).

137473393 is an equidigital number, since it uses as much as digits as its factorization.

137473393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33934.

The product of its digits is 142884, while the sum is 40.

The square root of 137473393 is about 11724.9048183770. The cubic root of 137473393 is about 516.1067636084.

The spelling of 137473393 in words is "one hundred thirty-seven million, four hundred seventy-three thousand, three hundred ninety-three".