3891469236 has 24 divisors (see below), whose sum is σ = 9083561760. Its totient is φ = 1296661152.

The previous prime is 3891469223. The next prime is 3891469271. The reversal of 3891469236 is 6329641983.

It is a super-4 number, since 4×3891469236⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28446 + ... + 92693.

It is an arithmetic number, because the mean of its divisors is an integer number (378481740).

Almost surely, 2^3891469236 is an apocalyptic number.

It is an amenable number.

3891469236 is an abundant number, since it is smaller than the sum of its proper divisors (5192092524).

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

3891469236 is a wasteful number, since it uses less digits than its factorization.

3891469236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123823 (or 123821 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 51.

The square root of 3891469236 is about 62381.6418187274. The cubic root of 3891469236 is about 1572.9123914377.

The spelling of 3891469236 in words is "three billion, eight hundred ninety-one million, four hundred sixty-nine thousand, two hundred thirty-six".