137793971 has 8 divisors (see below), whose sum is σ = 157549824. Its totient is φ = 118055880.

The previous prime is 137793967. The next prime is 137794001. The reversal of 137793971 is 179397731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137793971 - 2² = 137793967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137793961) 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 7 ways as a sum of consecutive naturals, for example, 28496 + ... + 32978.

It is an arithmetic number, because the mean of its divisors is an integer number (19693728).

Almost surely, 2^137793971 is an apocalyptic number.

137793971 is a deficient number, since it is larger than the sum of its proper divisors (19755853).

137793971 is an equidigital number, since it uses as much as digits as its factorization.

137793971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8881.

The product of its digits is 250047, while the sum is 47.

The square root of 137793971 is about 11738.5676724207. The cubic root of 137793971 is about 516.5076267114.

The spelling of 137793971 in words is "one hundred thirty-seven million, seven hundred ninety-three thousand, nine hundred seventy-one".