406902887 has 4 divisors (see below), whose sum is σ = 407065440. Its totient is φ = 406740336.

The previous prime is 406902883. The next prime is 406902941. The reversal of 406902887 is 788209604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406902887 - 2² = 406902883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406902883) 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, 77462 + ... + 82547.

It is an arithmetic number, because the mean of its divisors is an integer number (101766360).

Almost surely, 2^406902887 is an apocalyptic number.

406902887 is a deficient number, since it is larger than the sum of its proper divisors (162553).

406902887 is a wasteful number, since it uses less digits than its factorization.

406902887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162552.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 406902887 is about 20171.8340018948. The cubic root of 406902887 is about 741.0205586306.

The spelling of 406902887 in words is "four hundred six million, nine hundred two thousand, eight hundred eighty-seven".