1408631 has 4 divisors (see below), whose sum is σ = 1609872. Its totient is φ = 1207392.

The previous prime is 1408621. The next prime is 1408633. The reversal of 1408631 is 1368041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1368041 = 17 ⋅80473.

It is a cyclic number.

It is not a de Polignac number, because 1408631 - 2⁶ = 1408567 is a prime.

It is a super-2 number, since 2×1408631² = 3968482588322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1408597 and 1408606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1408633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100610 + ... + 100623.

It is an arithmetic number, because the mean of its divisors is an integer number (402468).

2^1408631 is an apocalyptic number.

1408631 is a deficient number, since it is larger than the sum of its proper divisors (201241).

1408631 is an equidigital number, since it uses as much as digits as its factorization.

1408631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201240.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1408631 is about 1186.8576157231. The cubic root of 1408631 is about 112.0983139720.

The spelling of 1408631 in words is "one million, four hundred eight thousand, six hundred thirty-one".