38472691 has 2 divisors, whose sum is σ = 38472692. Its totient is φ = 38472690.

The previous prime is 38472689. The next prime is 38472703. The reversal of 38472691 is 19627483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38472691 - 2¹ = 38472689 is a prime.

Together with 38472689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38472611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19236345 + 19236346.

It is an arithmetic number, because the mean of its divisors is an integer number (19236346).

Almost surely, 2^38472691 is an apocalyptic number.

38472691 is a deficient number, since it is larger than the sum of its proper divisors (1).

38472691 is an equidigital number, since it uses as much as digits as its factorization.

38472691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 38472691 is about 6202.6358106856. The cubic root of 38472691 is about 337.5858137527.

The spelling of 38472691 in words is "thirty-eight million, four hundred seventy-two thousand, six hundred ninety-one".