38979091 has 2 divisors, whose sum is σ = 38979092. Its totient is φ = 38979090.

The previous prime is 38979067. The next prime is 38979097. The reversal of 38979091 is 19097983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38979091 - 2⁷ = 38978963 is a prime.

It is not a weakly prime, because it can be changed into another prime (38979097) 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 as a sum of consecutive naturals, namely, 19489545 + 19489546.

It is an arithmetic number, because the mean of its divisors is an integer number (19489546).

Almost surely, 2^38979091 is an apocalyptic number.

38979091 is a deficient number, since it is larger than the sum of its proper divisors (1).

38979091 is an equidigital number, since it uses as much as digits as its factorization.

38979091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 38979091 is about 6243.3237141766. The cubic root of 38979091 is about 339.0605293309.

The spelling of 38979091 in words is "thirty-eight million, nine hundred seventy-nine thousand, ninety-one".