1402775249 has 4 divisors (see below), whose sum is σ = 1407732336. Its totient is φ = 1397818164.

The previous prime is 1402775239. The next prime is 1402775261. The reversal of 1402775249 is 9425772041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9425772041 = 7 ⋅1346538863.

It is a cyclic number.

It is not a de Polignac number, because 1402775249 - 2²⁰ = 1401726673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402775219) 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, 2478119 + ... + 2478684.

It is an arithmetic number, because the mean of its divisors is an integer number (351933084).

Almost surely, 2^1402775249 is an apocalyptic number.

It is an amenable number.

1402775249 is a deficient number, since it is larger than the sum of its proper divisors (4957087).

1402775249 is an equidigital number, since it uses as much as digits as its factorization.

1402775249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957086.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1402775249 is about 37453.6413316516. The cubic root of 1402775249 is about 1119.4276542623.

The spelling of 1402775249 in words is "one billion, four hundred two million, seven hundred seventy-five thousand, two hundred forty-nine".