406890723405 has 16 divisors (see below), whose sum is σ = 652269960000. Its totient is φ = 216593451648.

The previous prime is 406890723397. The next prime is 406890723413. The reversal of 406890723405 is 504327098604.

It is an interprime number because it is at equal distance from previous prime (406890723397) and next prime (406890723413).

It is not a de Polignac number, because 406890723405 - 2³ = 406890723397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25925280 + ... + 25940969.

It is an arithmetic number, because the mean of its divisors is an integer number (40766872500).

Almost surely, 2^406890723405 is an apocalyptic number.

It is an amenable number.

406890723405 is a deficient number, since it is larger than the sum of its proper divisors (245379236595).

406890723405 is a wasteful number, since it uses less digits than its factorization.

406890723405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51866780.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 406890723405 in words is "four hundred six billion, eight hundred ninety million, seven hundred twenty-three thousand, four hundred five".