69421989 has 48 divisors (see below), whose sum is σ = 118431744. Its totient is φ = 35380800.

The previous prime is 69421967. The next prime is 69421993. The reversal of 69421989 is 98912496.

It is not a de Polignac number, because 69421989 - 2¹⁶ = 69356453 is a prime.

It is a super-2 number, since 2×69421989² = 9638825113432242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69421939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109704 + ... + 110334.

It is an arithmetic number, because the mean of its divisors is an integer number (2467328).

Almost surely, 2^69421989 is an apocalyptic number.

It is an amenable number.

69421989 is a deficient number, since it is larger than the sum of its proper divisors (49009755).

69421989 is a wasteful number, since it uses less digits than its factorization.

69421989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 685 counting only the distinct ones).

The product of its digits is 279936, while the sum is 48.

The square root of 69421989 is about 8331.9858977317. The cubic root of 69421989 is about 410.9910370350.

The spelling of 69421989 in words is "sixty-nine million, four hundred twenty-one thousand, nine hundred eighty-nine".