3961507 has 8 divisors (see below), whose sum is σ = 4374720. Its totient is φ = 3557160.

The previous prime is 3961501. The next prime is 3961513. The reversal of 3961507 is 7051693.

It is an interprime number because it is at equal distance from previous prime (3961501) and next prime (3961513).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3961507 - 2¹⁵ = 3928739 is a prime.

It is a super-2 number, since 2×3961507² = 31387075422098, which contains 22 as substring.

It is a Duffinian number.

3961507 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3961501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257 + ... + 3082.

It is an arithmetic number, because the mean of its divisors is an integer number (546840).

Almost surely, 2^3961507 is an apocalyptic number.

3961507 is a deficient number, since it is larger than the sum of its proper divisors (413213).

3961507 is a wasteful number, since it uses less digits than its factorization.

3961507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 3961507 is about 1990.3534861928. The cubic root of 3961507 is about 158.2292644538.

The spelling of 3961507 in words is "three million, nine hundred sixty-one thousand, five hundred seven".