47259309 has 4 divisors (see below), whose sum is σ = 63012416. Its totient is φ = 31506204.

The previous prime is 47259293. The next prime is 47259341. The reversal of 47259309 is 90395274.

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 not a de Polignac number, because 47259309 - 2⁴ = 47259293 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 (47259349) 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, 7876549 + ... + 7876554.

It is an arithmetic number, because the mean of its divisors is an integer number (15753104).

Almost surely, 2^47259309 is an apocalyptic number.

It is an amenable number.

47259309 is a deficient number, since it is larger than the sum of its proper divisors (15753107).

47259309 is a wasteful number, since it uses less digits than its factorization.

47259309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15753106.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 47259309 is about 6874.5406391991. The cubic root of 47259309 is about 361.5450798814.

The spelling of 47259309 in words is "forty-seven million, two hundred fifty-nine thousand, three hundred nine".