802121349 has 4 divisors (see below), whose sum is σ = 1069495136. Its totient is φ = 534747564.

The previous prime is 802121339. The next prime is 802121351. The reversal of 802121349 is 943121208.

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.

It is not a de Polignac number, because 802121349 - 2²⁵ = 768566917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802121329) 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, 133686889 + ... + 133686894.

It is an arithmetic number, because the mean of its divisors is an integer number (267373784).

Almost surely, 2^802121349 is an apocalyptic number.

It is an amenable number.

802121349 is a deficient number, since it is larger than the sum of its proper divisors (267373787).

802121349 is a wasteful number, since it uses less digits than its factorization.

802121349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267373786.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 802121349 is about 28321.7469270524. The cubic root of 802121349 is about 929.1375783405.

The spelling of 802121349 in words is "eight hundred two million, one hundred twenty-one thousand, three hundred forty-nine".