4155405049 has 2 divisors, whose sum is σ = 4155405050. Its totient is φ = 4155405048.

The previous prime is 4155405017. The next prime is 4155405071. The reversal of 4155405049 is 9405045514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4109707449 + 45697600 = 64107^2 + 6760^2 .

It is a cyclic number.

It is not a de Polignac number, because 4155405049 - 2⁵ = 4155405017 is a prime.

It is a super-2 number, since 2×4155405049² = 34534782242509384802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4155404999 and 4155405017.

It is not a weakly prime, because it can be changed into another prime (4155435049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077702524 + 2077702525.

It is an arithmetic number, because the mean of its divisors is an integer number (2077702525).

Almost surely, 2^4155405049 is an apocalyptic number.

It is an amenable number.

4155405049 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155405049 is an equidigital number, since it uses as much as digits as its factorization.

4155405049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 4155405049 is about 64462.4312991684. The cubic root of 4155405049 is about 1607.6979366325.

The spelling of 4155405049 in words is "four billion, one hundred fifty-five million, four hundred five thousand, forty-nine".