1408491251 has 4 divisors (see below), whose sum is σ = 1409835000. Its totient is φ = 1407147504.

The previous prime is 1408491241. The next prime is 1408491311. The reversal of 1408491251 is 1521948041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1408491251 - 2¹⁰ = 1408490227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1408491211) 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, 670301 + ... + 672398.

It is an arithmetic number, because the mean of its divisors is an integer number (352458750).

Almost surely, 2^1408491251 is an apocalyptic number.

1408491251 is a deficient number, since it is larger than the sum of its proper divisors (1343749).

1408491251 is a wasteful number, since it uses less digits than its factorization.

1408491251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343748.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1408491251 is about 37529.8714492869. The cubic root of 1408491251 is about 1120.9460679219.

The spelling of 1408491251 in words is "one billion, four hundred eight million, four hundred ninety-one thousand, two hundred fifty-one".