40430505 has 16 divisors (see below), whose sum is σ = 68494464. Its totient is φ = 20294400.

The previous prime is 40430501. The next prime is 40430519. The reversal of 40430505 is 50503404.

It is a happy number.

It is not a de Polignac number, because 40430505 - 2² = 40430501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40430501) 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, 79021 + ... + 79530.

It is an arithmetic number, because the mean of its divisors is an integer number (4280904).

Almost surely, 2^40430505 is an apocalyptic number.

It is an amenable number.

40430505 is a deficient number, since it is larger than the sum of its proper divisors (28063959).

40430505 is a wasteful number, since it uses less digits than its factorization.

40430505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158576.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40430505 is about 6358.4986435479. The cubic root of 40430505 is about 343.2177358242.

Adding to 40430505 its reverse (50503404), we get a palindrome (90933909).

The spelling of 40430505 in words is "forty million, four hundred thirty thousand, five hundred five".