39148091 has 2 divisors, whose sum is σ = 39148092. Its totient is φ = 39148090.

The previous prime is 39148069. The next prime is 39148117. The reversal of 39148091 is 19084193.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39148091 - 2⁶ = 39148027 is a prime.

It is not a weakly prime, because it can be changed into another prime (39142091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19574045 + 19574046.

It is an arithmetic number, because the mean of its divisors is an integer number (19574046).

Almost surely, 2^39148091 is an apocalyptic number.

39148091 is a deficient number, since it is larger than the sum of its proper divisors (1).

39148091 is an equidigital number, since it uses as much as digits as its factorization.

39148091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 39148091 is about 6256.8435332842. The cubic root of 39148091 is about 339.5498396598.

The spelling of 39148091 in words is "thirty-nine million, one hundred forty-eight thousand, ninety-one".