3935820 has 48 divisors (see below), whose sum is σ = 12595968. Its totient is φ = 899520.

The previous prime is 3935819. The next prime is 3935821. The reversal of 3935820 is 285393.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3935819) and next prime (3935821).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (3935821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4266 + ... + 5105.

It is an arithmetic number, because the mean of its divisors is an integer number (262416).

Almost surely, 2^3935820 is an apocalyptic number.

3935820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3935820 is an abundant number, since it is smaller than the sum of its proper divisors (8660148).

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

3935820 is a wasteful number, since it uses less digits than its factorization.

3935820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9390 (or 9388 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 3935820 is about 1983.8901179249. The cubic root of 3935820 is about 157.8865285791.

The spelling of 3935820 in words is "three million, nine hundred thirty-five thousand, eight hundred twenty".