40458447 has 20 divisors (see below), whose sum is σ = 60647136. Its totient is φ = 26879040.

The previous prime is 40458413. The next prime is 40458463. The reversal of 40458447 is 74485404.

It is not a de Polignac number, because 40458447 - 2¹⁴ = 40442063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40458497) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29047 + ... + 30407.

Almost surely, 2^40458447 is an apocalyptic number.

40458447 is a deficient number, since it is larger than the sum of its proper divisors (20188689).

40458447 is a wasteful number, since it uses less digits than its factorization.

40458447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 40458447 is about 6360.6954808417. The cubic root of 40458447 is about 343.2967848947.

The spelling of 40458447 in words is "forty million, four hundred fifty-eight thousand, four hundred forty-seven".