40146940 has 12 divisors (see below), whose sum is σ = 84308616. Its totient is φ = 16058768.

The previous prime is 40146929. The next prime is 40146947. The reversal of 40146940 is 4964104.

It is a super-2 number, since 2×40146940² = 3223553582727200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40146899 and 40146908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40146947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003654 + ... + 1003693.

It is an arithmetic number, because the mean of its divisors is an integer number (7025718).

Almost surely, 2^40146940 is an apocalyptic number.

It is an amenable number.

40146940 is an abundant number, since it is smaller than the sum of its proper divisors (44161676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40146940 is a wasteful number, since it uses less digits than its factorization.

40146940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007356 (or 2007354 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40146940 is about 6336.1612984519. The cubic root of 40146940 is about 342.4134507010.

The spelling of 40146940 in words is "forty million, one hundred forty-six thousand, nine hundred forty".