4971890 has 48 divisors (see below), whose sum is σ = 11261376. Its totient is φ = 1547040.

The previous prime is 4971881. The next prime is 4971893. The reversal of 4971890 is 981794.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4971893) 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, 8177 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (234612).

Almost surely, 2^4971890 is an apocalyptic number.

4971890 is an abundant number, since it is smaller than the sum of its proper divisors (6289486).

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

4971890 is a wasteful number, since it uses less digits than its factorization.

4971890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 4971890 is about 2229.7735311013. The cubic root of 4971890 is about 170.6765427702.

The spelling of 4971890 in words is "four million, nine hundred seventy-one thousand, eight hundred ninety".