40889738 has 4 divisors (see below), whose sum is σ = 61334610. Its totient is φ = 20444868.

The previous prime is 40889731. The next prime is 40889759. The reversal of 40889738 is 83798804.

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., 38402809 + 2486929 = 6197^2 + 1577^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40889692 and 40889701.

It is not an unprimeable number, because it can be changed into a prime (40889731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222433 + ... + 10222436.

Almost surely, 2^40889738 is an apocalyptic number.

40889738 is a deficient number, since it is larger than the sum of its proper divisors (20444872).

40889738 is a wasteful number, since it uses less digits than its factorization.

40889738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444871.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 40889738 is about 6394.5084252036. The cubic root of 40889738 is about 344.5123348739.

The spelling of 40889738 in words is "forty million, eight hundred eighty-nine thousand, seven hundred thirty-eight".