1403438401 has 6 divisors (see below), whose sum is σ = 1481191602. Its totient is φ = 1329572880.

The previous prime is 1403438339. The next prime is 1403438411. The reversal of 1403438401 is 1048343041.

It can be written as a sum of positive squares in only one way, i.e., 816587776 + 586850625 = 28576^2 + 24225^2 .

It is not a de Polignac number, because 1403438401 - 2¹³ = 1403430209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1403438401.

It is not an unprimeable number, because it can be changed into a prime (1403438411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1943460 + ... + 1944181.

It is an arithmetic number, because the mean of its divisors is an integer number (246865267).

Almost surely, 2^1403438401 is an apocalyptic number.

It is an amenable number.

1403438401 is a deficient number, since it is larger than the sum of its proper divisors (77753201).

1403438401 is an equidigital number, since it uses as much as digits as its factorization.

1403438401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887679 (or 3887660 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1403438401 is about 37462.4932565893. The cubic root of 1403438401 is about 1119.6040269537.

The spelling of 1403438401 in words is "one billion, four hundred three million, four hundred thirty-eight thousand, four hundred one".