44136487 has 4 divisors (see below), whose sum is σ = 46459480. Its totient is φ = 41813496.

The previous prime is 44136473. The next prime is 44136509. The reversal of 44136487 is 78463144.

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

It is a cyclic number.

It is not a de Polignac number, because 44136487 - 2⁷ = 44136359 is a prime.

It is a super-3 number, since 3×44136487³ (a number of 24 digits) contains 333 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 (44136887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161468 + ... + 1161505.

It is an arithmetic number, because the mean of its divisors is an integer number (11614870).

Almost surely, 2^44136487 is an apocalyptic number.

44136487 is a deficient number, since it is larger than the sum of its proper divisors (2322993).

44136487 is a wasteful number, since it uses less digits than its factorization.

44136487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322992.

The product of its digits is 64512, while the sum is 37.

The square root of 44136487 is about 6643.5297094240. The cubic root of 44136487 is about 353.3994920813.

The spelling of 44136487 in words is "forty-four million, one hundred thirty-six thousand, four hundred eighty-seven".