40478401 has 4 divisors (see below), whose sum is σ = 40518400. Its totient is φ = 40438404.

The previous prime is 40478393. The next prime is 40478423. The reversal of 40478401 is 10487404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40478401 - 2³ = 40478393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40478401.

It is not an unprimeable number, because it can be changed into a prime (40478101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18441 + ... + 20518.

It is an arithmetic number, because the mean of its divisors is an integer number (10129600).

Almost surely, 2^40478401 is an apocalyptic number.

It is an amenable number.

40478401 is a deficient number, since it is larger than the sum of its proper divisors (39999).

40478401 is a wasteful number, since it uses less digits than its factorization.

40478401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39998.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 40478401 is about 6362.2638266579. The cubic root of 40478401 is about 343.3532133104.

The spelling of 40478401 in words is "forty million, four hundred seventy-eight thousand, four hundred one".