44139386 has 4 divisors (see below), whose sum is σ = 66209082. Its totient is φ = 22069692.

The previous prime is 44139383. The next prime is 44139419. The reversal of 44139386 is 68393144.

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., 26204161 + 17935225 = 5119^2 + 4235^2 .

It is a super-3 number, since 3×44139386³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (44139383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11034845 + ... + 11034848.

Almost surely, 2^44139386 is an apocalyptic number.

44139386 is a deficient number, since it is larger than the sum of its proper divisors (22069696).

44139386 is a wasteful number, since it uses less digits than its factorization.

44139386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22069695.

The product of its digits is 62208, while the sum is 38.

The square root of 44139386 is about 6643.7478880523. The cubic root of 44139386 is about 353.4072293131.

The spelling of 44139386 in words is "forty-four million, one hundred thirty-nine thousand, three hundred eighty-six".