40291892 has 6 divisors (see below), whose sum is σ = 70510818. Its totient is φ = 20145944.

The previous prime is 40291891. The next prime is 40291897. The reversal of 40291892 is 29819204.

40291892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 28153636 + 12138256 = 5306^2 + 3484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40291891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5036483 + ... + 5036490.

It is an arithmetic number, because the mean of its divisors is an integer number (11751803).

Almost surely, 2^40291892 is an apocalyptic number.

It is an amenable number.

40291892 is a deficient number, since it is larger than the sum of its proper divisors (30218926).

40291892 is a wasteful number, since it uses less digits than its factorization.

40291892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10072977 (or 10072975 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 40291892 is about 6347.5894637256. The cubic root of 40291892 is about 342.8250545035.

The spelling of 40291892 in words is "forty million, two hundred ninety-one thousand, eight hundred ninety-two".