920744039 has 2 divisors, whose sum is σ = 920744040. Its totient is φ = 920744038.

The previous prime is 920743991. The next prime is 920744059. The reversal of 920744039 is 930447029.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920744039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 920743993 and 920744011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920744059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460372019 + 460372020.

It is an arithmetic number, because the mean of its divisors is an integer number (460372020).

Almost surely, 2^920744039 is an apocalyptic number.

920744039 is a deficient number, since it is larger than the sum of its proper divisors (1).

920744039 is an equidigital number, since it uses as much as digits as its factorization.

920744039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 920744039 is about 30343.7644170924. The cubic root of 920744039 is about 972.8509454311.

The spelling of 920744039 in words is "nine hundred twenty million, seven hundred forty-four thousand, thirty-nine".