39000021001 has 4 divisors (see below), whose sum is σ = 40695674112. Its totient is φ = 37304367892.

The previous prime is 39000020963. The next prime is 39000021017. The reversal of 39000021001 is 10012000093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39000021001 - 2¹⁵ = 38999988233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39000021061) 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, 847826521 + ... + 847826566.

It is an arithmetic number, because the mean of its divisors is an integer number (10173918528).

Almost surely, 2^39000021001 is an apocalyptic number.

It is an amenable number.

39000021001 is a deficient number, since it is larger than the sum of its proper divisors (1695653111).

39000021001 is a wasteful number, since it uses less digits than its factorization.

39000021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695653110.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 39000021001 its reverse (10012000093), we get a palindrome (49012021094).

The spelling of 39000021001 in words is "thirty-nine billion, twenty-one thousand, one".