3951930 has 16 divisors (see below), whose sum is σ = 9484704. Its totient is φ = 1053840.

The previous prime is 3951923. The next prime is 3951947. The reversal of 3951930 is 391593.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 131731 = 3951930 / (3 + 9 + 5 + 1 + 9 + 3 + 0).

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, 65836 + ... + 65895.

It is an arithmetic number, because the mean of its divisors is an integer number (592794).

Almost surely, 2^3951930 is an apocalyptic number.

3951930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3951930 is an abundant number, since it is smaller than the sum of its proper divisors (5532774).

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

3951930 is a wasteful number, since it uses less digits than its factorization.

3951930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131741.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 3951930 is about 1987.9461763338. The cubic root of 3951930 is about 158.1016543932.

The spelling of 3951930 in words is "three million, nine hundred fifty-one thousand, nine hundred thirty".