921699414 has 24 divisors (see below), whose sum is σ = 2016407952. Its totient is φ = 304249680.

The previous prime is 921699413. The next prime is 921699463. The reversal of 921699414 is 414996129.

It is a super-3 number, since 3×921699414³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 921699414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921699413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246717 + ... + 250424.

It is an arithmetic number, because the mean of its divisors is an integer number (84016998).

Almost surely, 2^921699414 is an apocalyptic number.

921699414 is an abundant number, since it is smaller than the sum of its proper divisors (1094708538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

921699414 is a wasteful number, since it uses less digits than its factorization.

921699414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497252 (or 497249 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 921699414 is about 30359.5028615424. The cubic root of 921699414 is about 973.1873097020.

The spelling of 921699414 in words is "nine hundred twenty-one million, six hundred ninety-nine thousand, four hundred fourteen".