39778941 has 8 divisors (see below), whose sum is σ = 53765440. Its totient is φ = 26155872.

The previous prime is 39778927. The next prime is 39778969. The reversal of 39778941 is 14987793.

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

It is not a de Polignac number, because 39778941 - 2⁶ = 39778877 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 (39778841) 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, 90601 + ... + 91038.

It is an arithmetic number, because the mean of its divisors is an integer number (6720680).

Almost surely, 2^39778941 is an apocalyptic number.

It is an amenable number.

39778941 is a deficient number, since it is larger than the sum of its proper divisors (13986499).

39778941 is a wasteful number, since it uses less digits than its factorization.

39778941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181715.

The product of its digits is 381024, while the sum is 48.

The square root of 39778941 is about 6307.0548594411. The cubic root of 39778941 is about 341.3640158940.

The spelling of 39778941 in words is "thirty-nine million, seven hundred seventy-eight thousand, nine hundred forty-one".