999403454 has 32 divisors (see below), whose sum is σ = 1768580352. Its totient is φ = 414648000.

The previous prime is 999403453. The next prime is 999403469. The reversal of 999403454 is 454304999.

It is a junction number, because it is equal to n+sod(n) for n = 999403399 and 999403408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999403453) 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, 68549 + ... + 81839.

It is an arithmetic number, because the mean of its divisors is an integer number (55268136).

Almost surely, 2^999403454 is an apocalyptic number.

999403454 is a deficient number, since it is larger than the sum of its proper divisors (769176898).

999403454 is a wasteful number, since it uses less digits than its factorization.

999403454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13472.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 999403454 is about 31613.3429741304. The cubic root of 999403454 is about 999.8011117794.

The spelling of 999403454 in words is "nine hundred ninety-nine million, four hundred three thousand, four hundred fifty-four".