38406984529 has 3 divisors (see below), whose sum is σ = 38407180507. Its totient is φ = 38406788552.

The previous prime is 38406984491. The next prime is 38406984557. The reversal of 38406984529 is 92548960483.

The square root of 38406984529 is 195977.

It is a perfect power (a square), and thus also a powerful 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.

It can be written as a sum of positive squares in only one way, i.e., 17018507025 + 21388477504 = 130455^2 + 146248^2 .

It is not a de Polignac number, because 38406984529 - 2⁹ = 38406984017 is a prime.

It is a super-2 number, since 2×38406984529² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38406984559) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 97989 + ... + 293965.

Almost surely, 2^38406984529 is an apocalyptic number.

38406984529 is the 195977-th square number.

38406984529 is the 97989-th centered octagonal number.

It is an amenable number.

38406984529 is a deficient number, since it is larger than the sum of its proper divisors (195978).

38406984529 is an frugal number, since it uses more digits than its factorization.

38406984529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391954 (or 195977 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 38406984529 in words is "thirty-eight billion, four hundred six million, nine hundred eighty-four thousand, five hundred twenty-nine".