921429046 has 4 divisors (see below), whose sum is σ = 1382143572. Its totient is φ = 460714522.

The previous prime is 921429011. The next prime is 921429049. The reversal of 921429046 is 640924129.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 921428996 and 921429014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921429049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230357260 + ... + 230357263.

It is an arithmetic number, because the mean of its divisors is an integer number (345535893).

Almost surely, 2^921429046 is an apocalyptic number.

921429046 is a deficient number, since it is larger than the sum of its proper divisors (460714526).

921429046 is a wasteful number, since it uses less digits than its factorization.

921429046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460714525.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 921429046 is about 30355.0497611188. The cubic root of 921429046 is about 973.0921433046.

The spelling of 921429046 in words is "nine hundred twenty-one million, four hundred twenty-nine thousand, forty-six".