40491082 has 4 divisors (see below), whose sum is σ = 60736626. Its totient is φ = 20245540.

The previous prime is 40491049. The next prime is 40491089. The reversal of 40491082 is 28019404.

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., 30129121 + 10361961 = 5489^2 + 3219^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40491082.

It is not an unprimeable number, because it can be changed into a prime (40491089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122769 + ... + 10122772.

Almost surely, 2^40491082 is an apocalyptic number.

40491082 is a deficient number, since it is larger than the sum of its proper divisors (20245544).

40491082 is a wasteful number, since it uses less digits than its factorization.

40491082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20245543.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 40491082 is about 6363.2603278508. The cubic root of 40491082 is about 343.3890645907.

The spelling of 40491082 in words is "forty million, four hundred ninety-one thousand, eighty-two".