406779953 has 4 divisors (see below), whose sum is σ = 407369328. Its totient is φ = 406190580.

The previous prime is 406779941. The next prime is 406779979. The reversal of 406779953 is 359977604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406779953 - 2⁶ = 406779889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (406779913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293651 + ... + 295032.

It is an arithmetic number, because the mean of its divisors is an integer number (101842332).

Almost surely, 2^406779953 is an apocalyptic number.

It is an amenable number.

406779953 is a deficient number, since it is larger than the sum of its proper divisors (589375).

406779953 is an equidigital number, since it uses as much as digits as its factorization.

406779953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589374.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The square root of 406779953 is about 20168.7866020740. The cubic root of 406779953 is about 740.9459251002.

The spelling of 406779953 in words is "four hundred six million, seven hundred seventy-nine thousand, nine hundred fifty-three".