4149731 has 2 divisors, whose sum is σ = 4149732. Its totient is φ = 4149730.

The previous prime is 4149721. The next prime is 4149749. The reversal of 4149731 is 1379414.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4149731 is a prime.

It is a super-2 number, since 2×4149731² = 34440534744722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 4149694 and 4149703.

It is not a weakly prime, because it can be changed into another prime (4149721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2074865 + 2074866.

It is an arithmetic number, because the mean of its divisors is an integer number (2074866).

Almost surely, 2^4149731 is an apocalyptic number.

4149731 is a deficient number, since it is larger than the sum of its proper divisors (1).

4149731 is an equidigital number, since it uses as much as digits as its factorization.

4149731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 4149731 is about 2037.0888542231. The cubic root of 4149731 is about 160.6965853005.

The spelling of 4149731 in words is "four million, one hundred forty-nine thousand, seven hundred thirty-one".