40074381 has 12 divisors (see below), whose sum is σ = 57993052. Its totient is φ = 26666496.

The previous prime is 40074373. The next prime is 40074383. The reversal of 40074381 is 18347004.

It can be written as a sum of positive squares in 2 ways, for example, as 32832900 + 7241481 = 5730^2 + 2691^2 .

It is not a de Polignac number, because 40074381 - 2³ = 40074373 is a prime.

It is a super-2 number, since 2×40074381² = 3211912025066322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40074383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1335 + ... + 9051.

Almost surely, 2^40074381 is an apocalyptic number.

It is an amenable number.

40074381 is a deficient number, since it is larger than the sum of its proper divisors (17918671).

40074381 is a wasteful number, since it uses less digits than its factorization.

40074381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8300 (or 8297 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40074381 is about 6330.4329235843. The cubic root of 40074381 is about 342.2070409432.

The spelling of 40074381 in words is "forty million, seventy-four thousand, three hundred eighty-one".