406739 has 2 divisors, whose sum is σ = 406740. Its totient is φ = 406738.

The previous prime is 406729. The next prime is 406789. The reversal of 406739 is 937604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406739 - 2¹⁶ = 341203 is a prime.

It is a super-2 number, since 2×406739² = 330873228242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (406729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203369 + 203370.

It is an arithmetic number, because the mean of its divisors is an integer number (203370).

2⁴⁰⁶⁷³⁹ is an apocalyptic number.

406739 is a deficient number, since it is larger than the sum of its proper divisors (1).

406739 is an equidigital number, since it uses as much as digits as its factorization.

406739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 406739 is about 637.7609269938. The cubic root of 406739 is about 74.0921059095.

The spelling of 406739 in words is "four hundred six thousand, seven hundred thirty-nine".