137722349 has 4 divisors (see below), whose sum is σ = 138171264. Its totient is φ = 137273436.

The previous prime is 137722313. The next prime is 137722379. The reversal of 137722349 is 943227731.

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: 943227731 = 31 ⋅30426701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137722349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137722309) 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, 223997 + ... + 224610.

It is an arithmetic number, because the mean of its divisors is an integer number (34542816).

Almost surely, 2^137722349 is an apocalyptic number.

It is an amenable number.

137722349 is a deficient number, since it is larger than the sum of its proper divisors (448915).

137722349 is an equidigital number, since it uses as much as digits as its factorization.

137722349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448914.

The product of its digits is 63504, while the sum is 38.

The square root of 137722349 is about 11735.5165629809. The cubic root of 137722349 is about 516.4181217782.

The spelling of 137722349 in words is "one hundred thirty-seven million, seven hundred twenty-two thousand, three hundred forty-nine".