38739473 has 2 divisors, whose sum is σ = 38739474. Its totient is φ = 38739472.

The previous prime is 38739469. The next prime is 38739479. The reversal of 38739473 is 37493783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30283009 + 8456464 = 5503^2 + 2908^2 .

It is a cyclic number.

It is not a de Polignac number, because 38739473 - 2² = 38739469 is a prime.

It is not a weakly prime, because it can be changed into another prime (38739479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19369736 + 19369737.

It is an arithmetic number, because the mean of its divisors is an integer number (19369737).

Almost surely, 2^38739473 is an apocalyptic number.

It is an amenable number.

38739473 is a deficient number, since it is larger than the sum of its proper divisors (1).

38739473 is an equidigital number, since it uses as much as digits as its factorization.

38739473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 44.

The square root of 38739473 is about 6224.1041925726. The cubic root of 38739473 is about 338.3643265279.

The spelling of 38739473 in words is "thirty-eight million, seven hundred thirty-nine thousand, four hundred seventy-three".