38946391 has 16 divisors (see below), whose sum is σ = 44359200. Its totient is φ = 34151040.

The previous prime is 38946359. The next prime is 38946403. The reversal of 38946391 is 19364983.

It is not a de Polignac number, because 38946391 - 2⁵ = 38946359 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 (38946331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38095 + ... + 39103.

It is an arithmetic number, because the mean of its divisors is an integer number (2772450).

Almost surely, 2^38946391 is an apocalyptic number.

38946391 is a deficient number, since it is larger than the sum of its proper divisors (5412809).

38946391 is a wasteful number, since it uses less digits than its factorization.

38946391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1049 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 38946391 is about 6240.7043672970. The cubic root of 38946391 is about 338.9656889016.

The spelling of 38946391 in words is "thirty-eight million, nine hundred forty-six thousand, three hundred ninety-one".