699921432 has 64 divisors (see below), whose sum is σ = 2221977600. Its totient is φ = 199977120.

The previous prime is 699921419. The next prime is 699921437. The reversal of 699921432 is 234129996.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699921437) 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, 229944 + ... + 232967.

It is an arithmetic number, because the mean of its divisors is an integer number (34718400).

Almost surely, 2^699921432 is an apocalyptic number.

It is an amenable number.

699921432 is an abundant number, since it is smaller than the sum of its proper divisors (1522056168).

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

699921432 is a wasteful number, since it uses less digits than its factorization.

699921432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462933 (or 462923 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 699921432 is about 26456.0282733444. The cubic root of 699921432 is about 887.8707810513.

The spelling of 699921432 in words is "six hundred ninety-nine million, nine hundred twenty-one thousand, four hundred thirty-two".