40438477 has 8 divisors (see below), whose sum is σ = 41979392. Its totient is φ = 38912400.

The previous prime is 40438469. The next prime is 40438483. The reversal of 40438477 is 77483404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40438477 - 2³ = 40438469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40838477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008 + ... + 9214.

It is an arithmetic number, because the mean of its divisors is an integer number (5247424).

Almost surely, 2^40438477 is an apocalyptic number.

It is an amenable number.

40438477 is a deficient number, since it is larger than the sum of its proper divisors (1540915).

40438477 is a wasteful number, since it uses less digits than its factorization.

40438477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7419.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 40438477 is about 6359.1254901912. The cubic root of 40438477 is about 343.2402926533.

The spelling of 40438477 in words is "forty million, four hundred thirty-eight thousand, four hundred seventy-seven".