137398443 has 32 divisors (see below), whose sum is σ = 237350400. Its totient is φ = 68656896.

The previous prime is 137398409. The next prime is 137398451. The reversal of 137398443 is 344893731.

It is not a de Polignac number, because 137398443 - 2⁸ = 137398187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137398395 and 137398404.

It is not an unprimeable number, because it can be changed into a prime (137398493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8058 + ... + 18431.

It is an arithmetic number, because the mean of its divisors is an integer number (7417200).

Almost surely, 2^137398443 is an apocalyptic number.

137398443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

137398443 is a deficient number, since it is larger than the sum of its proper divisors (99951957).

137398443 is a wasteful number, since it uses less digits than its factorization.

137398443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26531.

The product of its digits is 217728, while the sum is 42.

The square root of 137398443 is about 11721.7081946276. The cubic root of 137398443 is about 516.0129533735.

The spelling of 137398443 in words is "one hundred thirty-seven million, three hundred ninety-eight thousand, four hundred forty-three".