1405736401 has 4 divisors (see below), whose sum is σ = 1454210100. Its totient is φ = 1357262704.

The previous prime is 1405736383. The next prime is 1405736417. The reversal of 1405736401 is 1046375041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1202702400 + 203034001 = 34680^2 + 14249^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405736401 - 2⁵ = 1405736369 is a prime.

It is a super-3 number, since 3×1405736401³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405736461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24236806 + ... + 24236863.

It is an arithmetic number, because the mean of its divisors is an integer number (363552525).

Almost surely, 2^1405736401 is an apocalyptic number.

It is an amenable number.

1405736401 is a deficient number, since it is larger than the sum of its proper divisors (48473699).

1405736401 is an equidigital number, since it uses as much as digits as its factorization.

1405736401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48473698.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1405736401 is about 37493.1513879535. The cubic root of 1405736401 is about 1120.2147762535.

The spelling of 1405736401 in words is "one billion, four hundred five million, seven hundred thirty-six thousand, four hundred one".