405120953 has 4 divisors (see below), whose sum is σ = 405168720. Its totient is φ = 405073188.

The previous prime is 405120943. The next prime is 405120967. The reversal of 405120953 is 359021504.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 405120953 - 2⁶ = 405120889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405120913) 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, 7343 + ... + 29396.

It is an arithmetic number, because the mean of its divisors is an integer number (101292180).

Almost surely, 2^405120953 is an apocalyptic number.

It is an amenable number.

405120953 is a deficient number, since it is larger than the sum of its proper divisors (47767).

405120953 is a wasteful number, since it uses less digits than its factorization.

405120953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47766.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 405120953 is about 20127.6166746090. The cubic root of 405120953 is about 739.9372682396.

The spelling of 405120953 in words is "four hundred five million, one hundred twenty thousand, nine hundred fifty-three".