37997923 has 2 divisors, whose sum is σ = 37997924. Its totient is φ = 37997922.

The previous prime is 37997899. The next prime is 37997933. The reversal of 37997923 is 32979973.

37997923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 37997923 - 2⁹ = 37997411 is a prime.

It is a super-3 number, since 3×37997923³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (37997933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18998961 + 18998962.

It is an arithmetic number, because the mean of its divisors is an integer number (18998962).

Almost surely, 2^37997923 is an apocalyptic number.

37997923 is a deficient number, since it is larger than the sum of its proper divisors (1).

37997923 is an equidigital number, since it uses as much as digits as its factorization.

37997923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 49.

The square root of 37997923 is about 6164.2455337211. The cubic root of 37997923 is about 336.1914152850.

The spelling of 37997923 in words is "thirty-seven million, nine hundred ninety-seven thousand, nine hundred twenty-three".