867968440 has 16 divisors (see below), whose sum is σ = 1952929080. Its totient is φ = 347187360.

The previous prime is 867968383. The next prime is 867968441. The reversal of 867968440 is 44869768.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867968441) 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, 10849566 + ... + 10849645.

Almost surely, 2^867968440 is an apocalyptic number.

It is an amenable number.

867968440 is an abundant number, since it is smaller than the sum of its proper divisors (1084960640).

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

867968440 is a wasteful number, since it uses less digits than its factorization.

867968440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21699222 (or 21699218 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 867968440 is about 29461.3041123437. The cubic root of 867968440 is about 953.8966232200.

The spelling of 867968440 in words is "eight hundred sixty-seven million, nine hundred sixty-eight thousand, four hundred forty".