40012479 has 24 divisors (see below), whose sum is σ = 64952160. Its totient is φ = 23550912.

The previous prime is 40012477. The next prime is 40012481. The reversal of 40012479 is 97421004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40012477) and next prime (40012481).

It is not a de Polignac number, because 40012479 - 2¹ = 40012477 is a prime.

It is a super-3 number, since 3×40012479³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4744 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (2706340).

Almost surely, 2^40012479 is an apocalyptic number.

40012479 is a deficient number, since it is larger than the sum of its proper divisors (24939681).

40012479 is a wasteful number, since it uses less digits than its factorization.

40012479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14911 (or 14908 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40012479 is about 6325.5417949769. The cubic root of 40012479 is about 342.0307502873.

The spelling of 40012479 in words is "forty million, twelve thousand, four hundred seventy-nine".