44207138 has 4 divisors (see below), whose sum is σ = 66310710. Its totient is φ = 22103568.

The previous prime is 44207131. The next prime is 44207153. The reversal of 44207138 is 83170244.

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., 27699169 + 16507969 = 5263^2 + 4063^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 44207138.

It is not an unprimeable number, because it can be changed into a prime (44207131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051783 + ... + 11051786.

Almost surely, 2^44207138 is an apocalyptic number.

44207138 is a deficient number, since it is larger than the sum of its proper divisors (22103572).

44207138 is a wasteful number, since it uses less digits than its factorization.

44207138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22103571.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 44207138 is about 6648.8448620794. The cubic root of 44207138 is about 353.5879583490.

The spelling of 44207138 in words is "forty-four million, two hundred seven thousand, one hundred thirty-eight".