69400143940 has 12 divisors (see below), whose sum is σ = 145740302316. Its totient is φ = 27760057568.

The previous prime is 69400143893. The next prime is 69400143941. The reversal of 69400143940 is 4934100496.

It can be written as a sum of positive squares in 2 ways, for example, as 15025366084 + 54374777856 = 122578^2 + 233184^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69400143893 and 69400143902.

It is not an unprimeable number, because it can be changed into a prime (69400143941) 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, 1735003579 + ... + 1735003618.

It is an arithmetic number, because the mean of its divisors is an integer number (12145025193).

Almost surely, 2^69400143940 is an apocalyptic number.

It is an amenable number.

69400143940 is an abundant number, since it is smaller than the sum of its proper divisors (76340158376).

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

69400143940 is a wasteful number, since it uses less digits than its factorization.

69400143940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470007206 (or 3470007204 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 69400143940 in words is "sixty-nine billion, four hundred million, one hundred forty-three thousand, nine hundred forty".