1405404361 has 2 divisors, whose sum is σ = 1405404362. Its totient is φ = 1405404360.

The previous prime is 1405404311. The next prime is 1405404421. The reversal of 1405404361 is 1634045041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1174364361 + 231040000 = 34269^2 + 15200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405404361 - 2²¹ = 1403307209 is a prime.

It is a super-2 number, since 2×1405404361² = 3950322835835636642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1405404311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702702180 + 702702181.

It is an arithmetic number, because the mean of its divisors is an integer number (702702181).

Almost surely, 2^1405404361 is an apocalyptic number.

It is an amenable number.

1405404361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405404361 is an equidigital number, since it uses as much as digits as its factorization.

1405404361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1405404361 is about 37488.7231177590. The cubic root of 1405404361 is about 1120.1265697202.

The spelling of 1405404361 in words is "one billion, four hundred five million, four hundred four thousand, three hundred sixty-one".