38997397 has 8 divisors (see below), whose sum is σ = 41152320. Its totient is φ = 36880800.

The previous prime is 38997379. The next prime is 38997401. The reversal of 38997397 is 79379983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38997397 - 2¹⁹ = 38473109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38997197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7479 + ... + 11572.

It is an arithmetic number, because the mean of its divisors is an integer number (5144040).

Almost surely, 2^38997397 is an apocalyptic number.

It is an amenable number.

38997397 is a deficient number, since it is larger than the sum of its proper divisors (2154923).

38997397 is a wasteful number, since it uses less digits than its factorization.

38997397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19163.

The product of its digits is 2571912, while the sum is 55.

The square root of 38997397 is about 6244.7895881287. The cubic root of 38997397 is about 339.1135994127.

The spelling of 38997397 in words is "thirty-eight million, nine hundred ninety-seven thousand, three hundred ninety-seven".