3975397500 has 240 divisors, whose sum is σ = 12059064864. Its totient is φ = 1018368000.

The previous prime is 3975397469. The next prime is 3975397507. The reversal of 3975397500 is 57935793.

It is a self number, because there is not a number n which added to its sum of digits gives 3975397500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975397507) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29017432 + ... + 29017568.

Almost surely, 2^3975397500 is an apocalyptic number.

3975397500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3975397500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6029532432).

3975397500 is an abundant number, since it is smaller than the sum of its proper divisors (8083667364).

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

3975397500 is a wasteful number, since it uses less digits than its factorization.

3975397500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 893025, while the sum is 48.

The square root of 3975397500 is about 63050.7533658401. The cubic root of 3975397500 is about 1584.1398538006.

It can be divided in two parts, 3975 and 397500, that multiplied together give a square (1580062500 = 39750²).

The spelling of 3975397500 in words is "three billion, nine hundred seventy-five million, three hundred ninety-seven thousand, five hundred".