40140396 has 18 divisors (see below), whose sum is σ = 101466092. Its totient is φ = 13380120.

The previous prime is 40140389. The next prime is 40140403. The reversal of 40140396 is 69304104.

It is an interprime number because it is at equal distance from previous prime (40140389) and next prime (40140403).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×40140396² = 3222502782073632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 557470 + ... + 557541.

Almost surely, 2^40140396 is an apocalyptic number.

It is an amenable number.

40140396 is an abundant number, since it is smaller than the sum of its proper divisors (61325696).

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

40140396 is a wasteful number, since it uses less digits than its factorization.

40140396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115021 (or 1115016 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40140396 is about 6335.6448764116. The cubic root of 40140396 is about 342.3948450872.

The spelling of 40140396 in words is "forty million, one hundred forty thousand, three hundred ninety-six".