3898440252 has 72 divisors (see below), whose sum is σ = 11679298176. Its totient is φ = 1113838128.

The previous prime is 3898440191. The next prime is 3898440253. The reversal of 3898440252 is 2520448983.

It is a junction number, because it is equal to n+sod(n) for n = 3898440198 and 3898440207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898440253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279678 + ... + 293285.

Almost surely, 2^3898440252 is an apocalyptic number.

It is an amenable number.

3898440252 is an abundant number, since it is smaller than the sum of its proper divisors (7780857924).

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

3898440252 is a wasteful number, since it uses less digits than its factorization.

3898440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572989 (or 572975 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 3898440252 is about 62437.4907567561. The cubic root of 3898440252 is about 1573.8510477649.

The spelling of 3898440252 in words is "three billion, eight hundred ninety-eight million, four hundred forty thousand, two hundred fifty-two".