38491097 has 4 divisors (see below), whose sum is σ = 38503860. Its totient is φ = 38478336.

The previous prime is 38491067. The next prime is 38491127. The reversal of 38491097 is 79019483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79019483 = 1277 ⋅61879.

It is an interprime number because it is at equal distance from previous prime (38491067) and next prime (38491127).

It can be written as a sum of positive squares in 2 ways, for example, as 11669056 + 26822041 = 3416^2 + 5179^2 .

It is a cyclic number.

It is not a de Polignac number, because 38491097 - 2¹⁶ = 38425561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38491067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953 + ... + 8825.

It is an arithmetic number, because the mean of its divisors is an integer number (9625965).

Almost surely, 2^38491097 is an apocalyptic number.

It is an amenable number.

38491097 is a deficient number, since it is larger than the sum of its proper divisors (12763).

38491097 is an equidigital number, since it uses as much as digits as its factorization.

38491097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12762.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 38491097 is about 6204.1193573303. The cubic root of 38491097 is about 337.6396407981.

The spelling of 38491097 in words is "thirty-eight million, four hundred ninety-one thousand, ninety-seven".