40439492 has 6 divisors (see below), whose sum is σ = 70769118. Its totient is φ = 20219744.

The previous prime is 40439471. The next prime is 40439513. The reversal of 40439492 is 29493404.

It is an interprime number because it is at equal distance from previous prime (40439471) and next prime (40439513).

It can be written as a sum of positive squares in only one way, i.e., 25260676 + 15178816 = 5026^2 + 3896^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5054933 + ... + 5054940.

It is an arithmetic number, because the mean of its divisors is an integer number (11794853).

Almost surely, 2^40439492 is an apocalyptic number.

It is an amenable number.

40439492 is a deficient number, since it is larger than the sum of its proper divisors (30329626).

40439492 is a wasteful number, since it uses less digits than its factorization.

40439492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10109877 (or 10109875 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 40439492 is about 6359.2052962615. The cubic root of 40439492 is about 343.2431643900.

The spelling of 40439492 in words is "forty million, four hundred thirty-nine thousand, four hundred ninety-two".