40381492 has 12 divisors (see below), whose sum is σ = 71519616. Its totient is φ = 19947320.

The previous prime is 40381489. The next prime is 40381501. The reversal of 40381492 is 29418304.

It is a super-2 number, since 2×40381492² = 3261329792292128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60484 + ... + 61147.

It is an arithmetic number, because the mean of its divisors is an integer number (5959968).

Almost surely, 2^40381492 is an apocalyptic number.

It is an amenable number.

40381492 is a deficient number, since it is larger than the sum of its proper divisors (31138124).

40381492 is a wasteful number, since it uses less digits than its factorization.

40381492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121718 (or 121716 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40381492 is about 6354.6433416833. The cubic root of 40381492 is about 343.0789880052.

Adding to 40381492 its reverse (29418304), we get a palindrome (69799796).

The spelling of 40381492 in words is "forty million, three hundred eighty-one thousand, four hundred ninety-two".