40378438 has 8 divisors (see below), whose sum is σ = 60601320. Its totient is φ = 20178000.

The previous prime is 40378427. The next prime is 40378447. The reversal of 40378438 is 83487304.

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

It is a junction number, because it is equal to n+sod(n) for n = 40378397 and 40378406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18 + ... + 8986.

It is an arithmetic number, because the mean of its divisors is an integer number (7575165).

Almost surely, 2^40378438 is an apocalyptic number.

40378438 is a deficient number, since it is larger than the sum of its proper divisors (20222882).

40378438 is a wasteful number, since it uses less digits than its factorization.

40378438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11222.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 40378438 is about 6354.4030404122. The cubic root of 40378438 is about 343.0703389138.

The spelling of 40378438 in words is "forty million, three hundred seventy-eight thousand, four hundred thirty-eight".