38984391 has 12 divisors (see below), whose sum is σ = 58127680. Its totient is φ = 25151040.

The previous prime is 38984377. The next prime is 38984459. The reversal of 38984391 is 19348983.

It is not a de Polignac number, because 38984391 - 2¹⁷ = 38853319 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 (38984311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69586 + ... + 70143.

Almost surely, 2^38984391 is an apocalyptic number.

38984391 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

38984391 is a deficient number, since it is larger than the sum of its proper divisors (19143289).

38984391 is a wasteful number, since it uses less digits than its factorization.

38984391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139766 (or 139763 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 38984391 is about 6243.7481531529. The cubic root of 38984391 is about 339.0758960255.

The spelling of 38984391 in words is "thirty-eight million, nine hundred eighty-four thousand, three hundred ninety-one".