40420593 has 16 divisors (see below), whose sum is σ = 60024000. Its totient is φ = 26883360.

The previous prime is 40420573. The next prime is 40420643. The reversal of 40420593 is 39502404.

It is not a de Polignac number, because 40420593 - 2⁶ = 40420529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40420553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11733 + ... + 14781.

It is an arithmetic number, because the mean of its divisors is an integer number (3751500).

Almost surely, 2^40420593 is an apocalyptic number.

It is an amenable number.

40420593 is a deficient number, since it is larger than the sum of its proper divisors (19603407).

40420593 is a wasteful number, since it uses less digits than its factorization.

40420593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549 (or 3543 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40420593 is about 6357.7191664936. The cubic root of 40420593 is about 343.1896856160.

Adding to 40420593 its reverse (39502404), we get a palindrome (79922997).

The spelling of 40420593 in words is "forty million, four hundred twenty thousand, five hundred ninety-three".