40424493 has 8 divisors (see below), whose sum is σ = 54403488. Its totient is φ = 26697584.

The previous prime is 40424473. The next prime is 40424497. The reversal of 40424493 is 39442404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40424493 - 2¹³ = 40416301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40424493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40424497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62646 + ... + 63287.

It is an arithmetic number, because the mean of its divisors is an integer number (6800436).

Almost surely, 2^40424493 is an apocalyptic number.

It is an amenable number.

40424493 is a deficient number, since it is larger than the sum of its proper divisors (13978995).

40424493 is a wasteful number, since it uses less digits than its factorization.

40424493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126043.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 40424493 is about 6358.0258728634. The cubic root of 40424493 is about 343.2007228673.

Adding to 40424493 its reverse (39442404), we get a palindrome (79866897).

The spelling of 40424493 in words is "forty million, four hundred twenty-four thousand, four hundred ninety-three".