38864691 has 12 divisors (see below), whose sum is σ = 58217432. Its totient is φ = 25909632.

The previous prime is 38864677. The next prime is 38864701. The reversal of 38864691 is 19646883.

It is not a de Polignac number, because 38864691 - 2⁹ = 38864179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38864621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79726 + ... + 80211.

Almost surely, 2^38864691 is an apocalyptic number.

38864691 is a deficient number, since it is larger than the sum of its proper divisors (19352741).

38864691 is an equidigital number, since it uses as much as digits as its factorization.

38864691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159952 (or 159940 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 38864691 is about 6234.1551953733. The cubic root of 38864691 is about 338.7285006076.

The spelling of 38864691 in words is "thirty-eight million, eight hundred sixty-four thousand, six hundred ninety-one".