7738427 has 2 divisors, whose sum is σ = 7738428. Its totient is φ = 7738426.

The previous prime is 7738411. The next prime is 7738429. The reversal of 7738427 is 7248377.

It is a strong prime.

It is an emirp because it is prime and its reverse (7248377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7738427 - 2⁴ = 7738411 is a prime.

Together with 7738429, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7738429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3869213 + 3869214.

It is an arithmetic number, because the mean of its divisors is an integer number (3869214).

Almost surely, 2^7738427 is an apocalyptic number.

7738427 is a deficient number, since it is larger than the sum of its proper divisors (1).

7738427 is an equidigital number, since it uses as much as digits as its factorization.

7738427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856, while the sum is 38.

The square root of 7738427 is about 2781.8028326968. The cubic root of 7738427 is about 197.7960267240.

The spelling of 7738427 in words is "seven million, seven hundred thirty-eight thousand, four hundred twenty-seven".