239400445 has 16 divisors (see below), whose sum is σ = 309445632. Its totient is φ = 177281280.

The previous prime is 239400433. The next prime is 239400449. The reversal of 239400445 is 544004932.

It is a happy number.

It is not a de Polignac number, because 239400445 - 2¹³ = 239392253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239400449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30012 + ... + 37141.

It is an arithmetic number, because the mean of its divisors is an integer number (19340352).

Almost surely, 2^239400445 is an apocalyptic number.

It is an amenable number.

239400445 is a deficient number, since it is larger than the sum of its proper divisors (70045187).

239400445 is a wasteful number, since it uses less digits than its factorization.

239400445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67212.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 239400445 is about 15472.5707301663. The cubic root of 239400445 is about 620.9285816757.

The spelling of 239400445 in words is "two hundred thirty-nine million, four hundred thousand, four hundred forty-five".