1121407939 has 2 divisors, whose sum is σ = 1121407940. Its totient is φ = 1121407938.

The previous prime is 1121407909. The next prime is 1121407943. The reversal of 1121407939 is 9397041211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121407939 - 2¹⁹ = 1120883651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121407898 and 1121407907.

It is not a weakly prime, because it can be changed into another prime (1121407909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560703969 + 560703970.

It is an arithmetic number, because the mean of its divisors is an integer number (560703970).

Almost surely, 2^1121407939 is an apocalyptic number.

1121407939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121407939 is an equidigital number, since it uses as much as digits as its factorization.

1121407939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1121407939 is about 33487.4295669285. The cubic root of 1121407939 is about 1038.9337997563.

It can be divided in two parts, 1121 and 407939, that added together give a triangular number (409060 = T₉₀₄).

The spelling of 1121407939 in words is "one billion, one hundred twenty-one million, four hundred seven thousand, nine hundred thirty-nine".