406269408 has 48 divisors (see below), whose sum is σ = 1070979840. Its totient is φ = 134848896.

The previous prime is 406269407. The next prime is 406269421. The reversal of 406269408 is 804962604.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406269403) 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, 14091 + ... + 31797.

It is an arithmetic number, because the mean of its divisors is an integer number (22312080).

Almost surely, 2^406269408 is an apocalyptic number.

406269408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406269408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535489920).

406269408 is an abundant number, since it is smaller than the sum of its proper divisors (664710432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406269408 is a wasteful number, since it uses less digits than its factorization.

406269408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17959 (or 17951 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 406269408 is about 20156.1258182221. The cubic root of 406269408 is about 740.6358109907.

The spelling of 406269408 in words is "four hundred six million, two hundred sixty-nine thousand, four hundred eight".