39123473 has 2 divisors, whose sum is σ = 39123474. Its totient is φ = 39123472.

The previous prime is 39123463. The next prime is 39123481. The reversal of 39123473 is 37432193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21086464 + 18037009 = 4592^2 + 4247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39123473 is a prime.

It is a super-2 number, since 2×39123473² = 3061292279163458, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (39123463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19561736 + 19561737.

It is an arithmetic number, because the mean of its divisors is an integer number (19561737).

Almost surely, 2^39123473 is an apocalyptic number.

It is an amenable number.

39123473 is a deficient number, since it is larger than the sum of its proper divisors (1).

39123473 is an equidigital number, since it uses as much as digits as its factorization.

39123473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 39123473 is about 6254.8759380183. The cubic root of 39123473 is about 339.4786502307.

The spelling of 39123473 in words is "thirty-nine million, one hundred twenty-three thousand, four hundred seventy-three".