940840399548 has 144 divisors (see below), whose sum is σ = 2880503297280. Its totient is φ = 260140001760.

The previous prime is 940840399547. The next prime is 940840399549. The reversal of 940840399548 is 845993048049.

940840399548 is a `hidden beast` number, since 9 + 4 + 0 + 84 + 0 + 3 + 9 + 9 + 548 = 666.

It is an interprime number because it is at equal distance from previous prime (940840399547) and next prime (940840399549).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940840399547) 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, 79015 + ... + 1374017.

It is an arithmetic number, because the mean of its divisors is an integer number (20003495120).

Almost surely, 2^940840399548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 940840399548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440251648640).

940840399548 is an abundant number, since it is smaller than the sum of its proper divisors (1939662897732).

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

940840399548 is a wasteful number, since it uses less digits than its factorization.

940840399548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295085 (or 1295046 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 940840399548 in words is "nine hundred forty billion, eight hundred forty million, three hundred ninety-nine thousand, five hundred forty-eight".