7423021897 has 4 divisors (see below), whose sum is σ = 7813707280. Its totient is φ = 7032336516.

The previous prime is 7423021883. The next prime is 7423021927. The reversal of 7423021897 is 7981203247.

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 7423021897 - 2⁷ = 7423021769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7423021847) 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, 195342663 + ... + 195342700.

It is an arithmetic number, because the mean of its divisors is an integer number (1953426820).

Almost surely, 2^7423021897 is an apocalyptic number.

It is an amenable number.

7423021897 is a deficient number, since it is larger than the sum of its proper divisors (390685383).

7423021897 is a wasteful number, since it uses less digits than its factorization.

7423021897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390685382.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 7423021897 is about 86156.9608157112. The cubic root of 7423021897 is about 1950.7139088399.

The spelling of 7423021897 in words is "seven billion, four hundred twenty-three million, twenty-one thousand, eight hundred ninety-seven".