37879997 has 2 divisors, whose sum is σ = 37879998. Its totient is φ = 37879996.

The previous prime is 37879987. The next prime is 37879999. The reversal of 37879997 is 79997873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37871716 + 8281 = 6154^2 + 91^2 .

It is an emirp because it is prime and its reverse (79997873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37879997 - 2⁴ = 37879981 is a prime.

Together with 37879999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37879999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18939998 + 18939999.

It is an arithmetic number, because the mean of its divisors is an integer number (18939999).

Almost surely, 2^37879997 is an apocalyptic number.

It is an amenable number.

37879997 is a deficient number, since it is larger than the sum of its proper divisors (1).

37879997 is an equidigital number, since it uses as much as digits as its factorization.

37879997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6001128, while the sum is 59.

The square root of 37879997 is about 6154.6727776544. The cubic root of 37879997 is about 335.8432664929.

The spelling of 37879997 in words is "thirty-seven million, eight hundred seventy-nine thousand, nine hundred ninety-seven".