469290021 has 4 divisors (see below), whose sum is σ = 625720032. Its totient is φ = 312860012.

The previous prime is 469290013. The next prime is 469290023. The reversal of 469290021 is 120092964.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 469290021 - 2³ = 469290013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469290023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78215001 + ... + 78215006.

It is an arithmetic number, because the mean of its divisors is an integer number (156430008).

Almost surely, 2^469290021 is an apocalyptic number.

It is an amenable number.

469290021 is a deficient number, since it is larger than the sum of its proper divisors (156430011).

469290021 is a wasteful number, since it uses less digits than its factorization.

469290021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156430010.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 469290021 is about 21663.1027556073. The cubic root of 469290021 is about 777.1063179287.

The spelling of 469290021 in words is "four hundred sixty-nine million, two hundred ninety thousand, twenty-one".