39400021530 has 48 divisors (see below), whose sum is σ = 103246700544. Its totient is φ = 10423939680.

The previous prime is 39400021501. The next prime is 39400021567. The reversal of 39400021530 is 3512000493.

It is a junction number, because it is equal to n+sod(n) for n = 39400021494 and 39400021503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1712106 + ... + 1734965.

It is an arithmetic number, because the mean of its divisors is an integer number (2150972928).

Almost surely, 2^39400021530 is an apocalyptic number.

39400021530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39400021530 is an abundant number, since it is smaller than the sum of its proper divisors (63846679014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39400021530 is a wasteful number, since it uses less digits than its factorization.

39400021530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447211 (or 3447208 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The spelling of 39400021530 in words is "thirty-nine billion, four hundred million, twenty-one thousand, five hundred thirty".