1011201439 has 2 divisors, whose sum is σ = 1011201440. Its totient is φ = 1011201438.

The previous prime is 1011201437. The next prime is 1011201461. The reversal of 1011201439 is 9341021101.

It is an a-pointer prime, because the next prime (1011201461) can be obtained adding 1011201439 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011201439 - 2¹ = 1011201437 is a prime.

Together with 1011201437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011201437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600719 + 505600720.

It is an arithmetic number, because the mean of its divisors is an integer number (505600720).

Almost surely, 2^1011201439 is an apocalyptic number.

1011201439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011201439 is an equidigital number, since it uses as much as digits as its factorization.

1011201439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1011201439 is about 31799.3936891885. The cubic root of 1011201439 is about 1003.7199577553.

The spelling of 1011201439 in words is "one billion, eleven million, two hundred one thousand, four hundred thirty-nine".