138297458 has 16 divisors (see below), whose sum is σ = 227621016. Its totient is φ = 62624640.

The previous prime is 138297457. The next prime is 138297461. The reversal of 138297458 is 854792831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82391929 + 55905529 = 9077^2 + 7477^2 .

It is not an unprimeable number, because it can be changed into a prime (138297457) 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 7 ways as a sum of consecutive naturals, for example, 48803 + ... + 51558.

Almost surely, 2^138297458 is an apocalyptic number.

138297458 is a deficient number, since it is larger than the sum of its proper divisors (89323558).

138297458 is a wasteful number, since it uses less digits than its factorization.

138297458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100429.

The product of its digits is 483840, while the sum is 47.

The square root of 138297458 is about 11759.9939625835. The cubic root of 138297458 is about 517.1359531318.

The spelling of 138297458 in words is "one hundred thirty-eight million, two hundred ninety-seven thousand, four hundred fifty-eight".