402948405 has 16 divisors (see below), whose sum is σ = 716352960. Its totient is φ = 214905744.

The previous prime is 402948401. The next prime is 402948407. The reversal of 402948405 is 504849204.

It is not a de Polignac number, because 402948405 - 2² = 402948401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402948405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402948401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1492267 + ... + 1492536.

It is an arithmetic number, because the mean of its divisors is an integer number (44772060).

Almost surely, 2^402948405 is an apocalyptic number.

402948405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402948405 is a deficient number, since it is larger than the sum of its proper divisors (313404555).

402948405 is a wasteful number, since it uses less digits than its factorization.

402948405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984817 (or 2984811 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 402948405 is about 20073.5747937431. The cubic root of 402948405 is about 738.6122059987.

The spelling of 402948405 in words is "four hundred two million, nine hundred forty-eight thousand, four hundred five".