2402012309 has 4 divisors (see below), whose sum is σ = 2402166720. Its totient is φ = 2401857900.

The previous prime is 2402012299. The next prime is 2402012329. The reversal of 2402012309 is 9032102042.

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 a cyclic number.

It is not a de Polignac number, because 2402012309 - 2¹⁶ = 2401946773 is a prime.

It is a super-2 number, since 2×2402012309² = 11539326265175022962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402012329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50879 + ... + 85980.

It is an arithmetic number, because the mean of its divisors is an integer number (600541680).

Almost surely, 2^2402012309 is an apocalyptic number.

It is an amenable number.

2402012309 is a deficient number, since it is larger than the sum of its proper divisors (154411).

2402012309 is a wasteful number, since it uses less digits than its factorization.

2402012309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154410.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2402012309 is about 49010.3285951033. The cubic root of 2402012309 is about 1339.2399917273.

The spelling of 2402012309 in words is "two billion, four hundred two million, twelve thousand, three hundred nine".