38409473 has 2 divisors, whose sum is σ = 38409474. Its totient is φ = 38409472.

The previous prime is 38409419. The next prime is 38409487. The reversal of 38409473 is 37490483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21003889 + 17405584 = 4583^2 + 4172^2 .

It is a cyclic number.

It is not a de Polignac number, because 38409473 - 2¹⁶ = 38343937 is a prime.

It is a super-2 number, since 2×38409473² = 2950575232275458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38409493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19204736 + 19204737.

It is an arithmetic number, because the mean of its divisors is an integer number (19204737).

Almost surely, 2^38409473 is an apocalyptic number.

It is an amenable number.

38409473 is a deficient number, since it is larger than the sum of its proper divisors (1).

38409473 is an equidigital number, since it uses as much as digits as its factorization.

38409473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 38409473 is about 6197.5376561986. The cubic root of 38409473 is about 337.4008063315.

The spelling of 38409473 in words is "thirty-eight million, four hundred nine thousand, four hundred seventy-three".