40647412 has 12 divisors (see below), whose sum is σ = 76604836. Its totient is φ = 18760320.

The previous prime is 40647367. The next prime is 40647413. The reversal of 40647412 is 21474604.

It can be written as a sum of positive squares in 2 ways, for example, as 27499536 + 13147876 = 5244^2 + 3626^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40647413) 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, 390789 + ... + 390892.

Almost surely, 2^40647412 is an apocalyptic number.

It is an amenable number.

40647412 is a deficient number, since it is larger than the sum of its proper divisors (35957424).

40647412 is a wasteful number, since it uses less digits than its factorization.

40647412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781698 (or 781696 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40647412 is about 6375.5322915032. The cubic root of 40647412 is about 343.8304216464.

It can be divided in two parts, 4064 and 7412, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 40647412 in words is "forty million, six hundred forty-seven thousand, four hundred twelve".