1401606449 has 2 divisors, whose sum is σ = 1401606450. Its totient is φ = 1401606448.

The previous prime is 1401606439. The next prime is 1401606467. The reversal of 1401606449 is 9446061041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 922215424 + 479391025 = 30368^2 + 21895^2 .

It is an emirp because it is prime and its reverse (9446061041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401606449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401606439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700803224 + 700803225.

It is an arithmetic number, because the mean of its divisors is an integer number (700803225).

Almost surely, 2^1401606449 is an apocalyptic number.

It is an amenable number.

1401606449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401606449 is an equidigital number, since it uses as much as digits as its factorization.

1401606449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1401606449 is about 37438.0347908380. The cubic root of 1401606449 is about 1119.1166634611.

The spelling of 1401606449 in words is "one billion, four hundred one million, six hundred six thousand, four hundred forty-nine".