472640293 has 4 divisors (see below), whose sum is σ = 477057600. Its totient is φ = 468222988.

The previous prime is 472640269. The next prime is 472640297. The reversal of 472640293 is 392046274.

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 472640293 - 2¹⁷ = 472509221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472640297) 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, 2208493 + ... + 2208706.

It is an arithmetic number, because the mean of its divisors is an integer number (119264400).

Almost surely, 2^472640293 is an apocalyptic number.

It is an amenable number.

472640293 is a deficient number, since it is larger than the sum of its proper divisors (4417307).

472640293 is a wasteful number, since it uses less digits than its factorization.

472640293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417306.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 472640293 is about 21740.2919253629. The cubic root of 472640293 is about 778.9511944828.

The spelling of 472640293 in words is "four hundred seventy-two million, six hundred forty thousand, two hundred ninety-three".