40440429 has 12 divisors (see below), whose sum is σ = 59404800. Its totient is φ = 26502984.

The previous prime is 40440419. The next prime is 40440451. The reversal of 40440429 is 92404404.

It is not a de Polignac number, because 40440429 - 2⁵ = 40440397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37549 + ... + 38610.

It is an arithmetic number, because the mean of its divisors is an integer number (4950400).

Almost surely, 2^40440429 is an apocalyptic number.

It is an amenable number.

40440429 is a deficient number, since it is larger than the sum of its proper divisors (18964371).

40440429 is a wasteful number, since it uses less digits than its factorization.

40440429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76224 (or 76221 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40440429 is about 6359.2789685624. The cubic root of 40440429 is about 343.2458153989.

The spelling of 40440429 in words is "forty million, four hundred forty thousand, four hundred twenty-nine".