3951061 has 4 divisors (see below), whose sum is σ = 3955392. Its totient is φ = 3946732.

The previous prime is 3951023. The next prime is 3951071. The reversal of 3951061 is 1601593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1601593 = 7 ⋅228799.

It is a cyclic number.

It is not a de Polignac number, because 3951061 - 2¹¹ = 3949013 is a prime.

It is a super-2 number, since 2×3951061² = 31221766051442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3951001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205 + ... + 2818.

It is an arithmetic number, because the mean of its divisors is an integer number (988848).

Almost surely, 2^3951061 is an apocalyptic number.

It is an amenable number.

3951061 is a deficient number, since it is larger than the sum of its proper divisors (4331).

3951061 is a wasteful number, since it uses less digits than its factorization.

3951061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 3951061 is about 1987.7275970313. The cubic root of 3951061 is about 158.0900650846.

It can be divided in two parts, 39510 and 61, that multiplied together give a triangular number (2410110 = T₂₁₉₅).

The spelling of 3951061 in words is "three million, nine hundred fifty-one thousand, sixty-one".