300400138 has 4 divisors (see below), whose sum is σ = 450600210. Its totient is φ = 150200068.

The previous prime is 300400103. The next prime is 300400147. The reversal of 300400138 is 831004003.

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

It can be written as a sum of positive squares in only one way, i.e., 263640169 + 36759969 = 16237^2 + 6063^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75100033 + ... + 75100036.

Almost surely, 2^300400138 is an apocalyptic number.

300400138 is a deficient number, since it is larger than the sum of its proper divisors (150200072).

300400138 is a wasteful number, since it uses less digits than its factorization.

300400138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150200071.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 300400138 is about 17332.0552156979. The cubic root of 300400138 is about 669.7304462572.

The spelling of 300400138 in words is "three hundred million, four hundred thousand, one hundred thirty-eight".