1406689963 has 8 divisors (see below), whose sum is σ = 1607940320. Its totient is φ = 1205513280.

The previous prime is 1406689903. The next prime is 1406689967. The reversal of 1406689963 is 3699866041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406689963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1406689963.

It is not an unprimeable number, because it can be changed into a prime (1406689967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31543 + ... + 61711.

It is an arithmetic number, because the mean of its divisors is an integer number (200992540).

Almost surely, 2^1406689963 is an apocalyptic number.

1406689963 is a deficient number, since it is larger than the sum of its proper divisors (201250357).

1406689963 is an equidigital number, since it uses as much as digits as its factorization.

1406689963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36837.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 1406689963 is about 37505.8657145786. The cubic root of 1406689963 is about 1120.4680131100.

The spelling of 1406689963 in words is "one billion, four hundred six million, six hundred eighty-nine thousand, nine hundred sixty-three".