3942497 has 8 divisors (see below), whose sum is σ = 4272744. Its totient is φ = 3616128.

The previous prime is 3942493. The next prime is 3942503. The reversal of 3942497 is 7942493.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 3876961 = 256^2 + 1969^2 .

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 3942497 - 2² = 3942493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3942497.

It is not an unprimeable number, because it can be changed into a prime (3942493) 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, 1373 + ... + 3125.

It is an arithmetic number, because the mean of its divisors is an integer number (534093).

Almost surely, 2^3942497 is an apocalyptic number.

It is an amenable number.

3942497 is a deficient number, since it is larger than the sum of its proper divisors (330247).

3942497 is a wasteful number, since it uses less digits than its factorization.

3942497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939.

The product of its digits is 54432, while the sum is 38.

The square root of 3942497 is about 1985.5722097169. The cubic root of 3942497 is about 157.9757613835.

The spelling of 3942497 in words is "three million, nine hundred forty-two thousand, four hundred ninety-seven".