1406009401 has 4 divisors (see below), whose sum is σ = 1406508532. Its totient is φ = 1405510272.

The previous prime is 1406009377. The next prime is 1406009411. The reversal of 1406009401 is 1049006041.

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 954871801 + 451137600 = 30901^2 + 21240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406009401 - 2¹⁹ = 1405485113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406009411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245316 + ... + 250981.

It is an arithmetic number, because the mean of its divisors is an integer number (351627133).

Almost surely, 2^1406009401 is an apocalyptic number.

It is an amenable number.

1406009401 is a deficient number, since it is larger than the sum of its proper divisors (499131).

1406009401 is an equidigital number, since it uses as much as digits as its factorization.

1406009401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499130.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1406009401 is about 37496.7918761059. The cubic root of 1406009401 is about 1120.2872883875.

The spelling of 1406009401 in words is "one billion, four hundred six million, nine thousand, four hundred one".