1001200939 has 2 divisors, whose sum is σ = 1001200940. Its totient is φ = 1001200938.

The previous prime is 1001200897. The next prime is 1001200943. The reversal of 1001200939 is 9390021001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001200939 - 2¹⁵ = 1001168171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001200969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600469 + 500600470.

It is an arithmetic number, because the mean of its divisors is an integer number (500600470).

Almost surely, 2^1001200939 is an apocalyptic number.

1001200939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001200939 is an equidigital number, since it uses as much as digits as its factorization.

1001200939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1001200939 is about 31641.7594169477. The cubic root of 1001200939 is about 1000.4001528563.

The spelling of 1001200939 in words is "one billion, one million, two hundred thousand, nine hundred thirty-nine".