40179412 has 54 divisors (see below), whose sum is σ = 88642638. Its totient is φ = 15882048.

The previous prime is 40179409. The next prime is 40179443. The reversal of 40179412 is 21497104.

It can be written as a sum of positive squares in 3 ways, for example, as 3261636 + 36917776 = 1806^2 + 6076^2 .

It is a super-2 number, since 2×40179412² = 3228770297331488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 32518 + ... + 33730.

Almost surely, 2^40179412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40179412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44321319).

40179412 is an abundant number, since it is smaller than the sum of its proper divisors (48463226).

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

40179412 is a wasteful number, since it uses less digits than its factorization.

40179412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 40179412 is about 6338.7232152856. The cubic root of 40179412 is about 342.5057437721.

The spelling of 40179412 in words is "forty million, one hundred seventy-nine thousand, four hundred twelve".