406639701 has 48 divisors (see below), whose sum is σ = 665473536. Its totient is φ = 237397248.

The previous prime is 406639693. The next prime is 406639721. The reversal of 406639701 is 107936604.

It is not a de Polignac number, because 406639701 - 2³ = 406639693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406639721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 368116 + ... + 369218.

It is an arithmetic number, because the mean of its divisors is an integer number (13864032).

Almost surely, 2^406639701 is an apocalyptic number.

It is an amenable number.

406639701 is a deficient number, since it is larger than the sum of its proper divisors (258833835).

406639701 is a wasteful number, since it uses less digits than its factorization.

406639701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 406639701 is about 20165.3093455072. The cubic root of 406639701 is about 740.8607594042.

The spelling of 406639701 in words is "four hundred six million, six hundred thirty-nine thousand, seven hundred one".