7428698989 has 4 divisors (see below), whose sum is σ = 7429083424. Its totient is φ = 7428314556.

The previous prime is 7428698941. The next prime is 7428699001. The reversal of 7428698989 is 9898968247.

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: 9898968247 = 7 ⋅1414138321.

It is a cyclic number.

It is not a de Polignac number, because 7428698989 - 2⁹ = 7428698477 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 (7428693989) 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, 161607 + ... + 202420.

It is an arithmetic number, because the mean of its divisors is an integer number (1857270856).

Almost surely, 2^7428698989 is an apocalyptic number.

It is an amenable number.

7428698989 is a deficient number, since it is larger than the sum of its proper divisors (384435).

7428698989 is a wasteful number, since it uses less digits than its factorization.

7428698989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384434.

The product of its digits is 125411328, while the sum is 70.

The square root of 7428698989 is about 86189.9007366872. The cubic root of 7428698989 is about 1951.2110810368.

The spelling of 7428698989 in words is "seven billion, four hundred twenty-eight million, six hundred ninety-eight thousand, nine hundred eighty-nine".