4013957 has 4 divisors (see below), whose sum is σ = 4055436. Its totient is φ = 3972480.

The previous prime is 4013953. The next prime is 4013981. The reversal of 4013957 is 7593104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2070721 + 1943236 = 1439^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 4013957 - 2² = 4013953 is a prime.

It is a super-2 number, since 2×4013957² = 32223701595698, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013951) 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, 20594 + ... + 20787.

It is an arithmetic number, because the mean of its divisors is an integer number (1013859).

Almost surely, 2^4013957 is an apocalyptic number.

It is an amenable number.

4013957 is a deficient number, since it is larger than the sum of its proper divisors (41479).

4013957 is an equidigital number, since it uses as much as digits as its factorization.

4013957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41478.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 4013957 is about 2003.4862115822. The cubic root of 4013957 is about 158.9245188451.

The spelling of 4013957 in words is "four million, thirteen thousand, nine hundred fifty-seven".