137430389 has 4 divisors (see below), whose sum is σ = 137454540. Its totient is φ = 137406240.

The previous prime is 137430341. The next prime is 137430413. The reversal of 137430389 is 983034731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29789764 + 107640625 = 5458^2 + 10375^2 .

It is a cyclic number.

It is not a de Polignac number, because 137430389 - 2¹² = 137426293 is a prime.

It is a super-2 number, since 2×137430389² = 37774223641382642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137430289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697 + ... + 16665.

It is an arithmetic number, because the mean of its divisors is an integer number (34363635).

Almost surely, 2^137430389 is an apocalyptic number.

It is an amenable number.

137430389 is a deficient number, since it is larger than the sum of its proper divisors (24151).

137430389 is an equidigital number, since it uses as much as digits as its factorization.

137430389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24150.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 137430389 is about 11723.0708007757. The cubic root of 137430389 is about 516.0529423574.

The spelling of 137430389 in words is "one hundred thirty-seven million, four hundred thirty thousand, three hundred eighty-nine".