3961290 has 32 divisors (see below), whose sum is σ = 9922176. Its totient is φ = 1010240.

The previous prime is 3961283. The next prime is 3961327. The reversal of 3961290 is 921693.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2181 + ... + 3560.

It is an arithmetic number, because the mean of its divisors is an integer number (310068).

Almost surely, 2^3961290 is an apocalyptic number.

3961290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3961290 is an abundant number, since it is smaller than the sum of its proper divisors (5960886).

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

3961290 is a wasteful number, since it uses less digits than its factorization.

3961290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 3961290 is about 1990.2989725164. The cubic root of 3961290 is about 158.2263752858.

The spelling of 3961290 in words is "three million, nine hundred sixty-one thousand, two hundred ninety".