2925429921 has 12 divisors (see below), whose sum is σ = 4474187172. Its totient is φ = 1835563776.

The previous prime is 2925429919. The next prime is 2925429931. The reversal of 2925429921 is 1299245292.

It is a happy number.

2925429921 is a `hidden beast` number, since 292 + 54 + 299 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1544490000 + 1380939921 = 39300^2 + 37161^2 .

It is not a de Polignac number, because 2925429921 - 2¹ = 2925429919 is a prime.

It is a super-4 number, since 4×2925429921⁴ (a number of 39 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2925429931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9560076 + ... + 9560381.

It is an arithmetic number, because the mean of its divisors is an integer number (372848931).

Almost surely, 2^2925429921 is an apocalyptic number.

It is an amenable number.

2925429921 is a deficient number, since it is larger than the sum of its proper divisors (1548757251).

2925429921 is a wasteful number, since it uses less digits than its factorization.

2925429921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19120480 (or 19120477 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 2925429921 is about 54087.2436069726. The cubic root of 2925429921 is about 1430.1993170916.

The spelling of 2925429921 in words is "two billion, nine hundred twenty-five million, four hundred twenty-nine thousand, nine hundred twenty-one".