45387938 has 4 divisors (see below), whose sum is σ = 68081910. Its totient is φ = 22693968.

The previous prime is 45387931. The next prime is 45387959. The reversal of 45387938 is 83978354.

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., 40157569 + 5230369 = 6337^2 + 2287^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45387892 and 45387901.

It is not an unprimeable number, because it can be changed into a prime (45387931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11346983 + ... + 11346986.

Almost surely, 2^45387938 is an apocalyptic number.

45387938 is a deficient number, since it is larger than the sum of its proper divisors (22693972).

45387938 is a wasteful number, since it uses less digits than its factorization.

45387938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22693971.

The product of its digits is 725760, while the sum is 47.

The square root of 45387938 is about 6737.0570726394. The cubic root of 45387938 is about 356.7085214029.

The spelling of 45387938 in words is "forty-five million, three hundred eighty-seven thousand, nine hundred thirty-eight".