40434451 has 16 divisors (see below), whose sum is σ = 44186400. Its totient is φ = 36868608.

The previous prime is 40434431. The next prime is 40434463. The reversal of 40434451 is 15443404.

It is a cyclic number.

It is not a de Polignac number, because 40434451 - 2²³ = 32045843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40434421) 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, 79185 + ... + 79693.

It is an arithmetic number, because the mean of its divisors is an integer number (2761650).

Almost surely, 2^40434451 is an apocalyptic number.

40434451 is a deficient number, since it is larger than the sum of its proper divisors (3751949).

40434451 is a wasteful number, since it uses less digits than its factorization.

40434451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 40434451 is about 6358.8089293515. The cubic root of 40434451 is about 343.2289014290.

Adding to 40434451 its reverse (15443404), we get a palindrome (55877855).

The spelling of 40434451 in words is "forty million, four hundred thirty-four thousand, four hundred fifty-one".