406262399 has 6 divisors (see below), whose sum is σ = 416414640. Its totient is φ = 396351920.

The previous prime is 406262393. The next prime is 406262411. The reversal of 406262399 is 993262604.

It is not a de Polignac number, because 406262399 - 2⁴ = 406262383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406262393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119159 + ... + 122520.

It is an arithmetic number, because the mean of its divisors is an integer number (69402440).

Almost surely, 2^406262399 is an apocalyptic number.

406262399 is a deficient number, since it is larger than the sum of its proper divisors (10152241).

406262399 is an equidigital number, since it uses as much as digits as its factorization.

406262399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241761 (or 241720 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 406262399 is about 20155.9519497344. The cubic root of 406262399 is about 740.6315517921.

The spelling of 406262399 in words is "four hundred six million, two hundred sixty-two thousand, three hundred ninety-nine".