3978250535 has 16 divisors (see below), whose sum is σ = 5489366016. Its totient is φ = 2711203488.

The previous prime is 3978250511. The next prime is 3978250547. The reversal of 3978250535 is 5350528793.

It is a happy number.

It is not a de Polignac number, because 3978250535 - 2¹⁴ = 3978234151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3978250535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342959 + ... + 354368.

It is an arithmetic number, because the mean of its divisors is an integer number (343085376).

Almost surely, 2^3978250535 is an apocalyptic number.

3978250535 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3978250535 is a deficient number, since it is larger than the sum of its proper divisors (1511115481).

3978250535 is a wasteful number, since it uses less digits than its factorization.

3978250535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697502.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The square root of 3978250535 is about 63073.3742160668. The cubic root of 3978250535 is about 1584.5187279198.

The spelling of 3978250535 in words is "three billion, nine hundred seventy-eight million, two hundred fifty thousand, five hundred thirty-five".