69393940 has 48 divisors (see below), whose sum is σ = 181689984. Its totient is φ = 21628800.

The previous prime is 69393937. The next prime is 69393941. The reversal of 69393940 is 4939396.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69393941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20991 + ... + 24070.

It is an arithmetic number, because the mean of its divisors is an integer number (3785208).

Almost surely, 2^69393940 is an apocalyptic number.

It is an amenable number.

69393940 is an abundant number, since it is smaller than the sum of its proper divisors (112296044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69393940 is a wasteful number, since it uses less digits than its factorization.

69393940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45088 (or 45086 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 69393940 is about 8330.3025155153. The cubic root of 69393940 is about 410.9356778197.

The spelling of 69393940 in words is "sixty-nine million, three hundred ninety-three thousand, nine hundred forty".