3942897262928 has 160 divisors (see below), whose sum is σ = 8659461092352. Its totient is φ = 1726636953600.

The previous prime is 3942897262919. The next prime is 3942897262951. The reversal of 3942897262928 is 8292627982493.

It is a Cunningham number, because it is equal to 1985673²-1.

It is a super-2 number, since 2×3942897262928² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123095651 + ... + 123127677.

Almost surely, 2^{3942897262928} 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 3942897262928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4329730546176).

3942897262928 is an abundant number, since it is smaller than the sum of its proper divisors (4716563829424).

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

3942897262928 is a wasteful number, since it uses less digits than its factorization.

3942897262928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32453 (or 32447 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 71.

The spelling of 3942897262928 in words is "three trillion, nine hundred forty-two billion, eight hundred ninety-seven million, two hundred sixty-two thousand, nine hundred twenty-eight".