245211939 has 24 divisors (see below), whose sum is σ = 414671712. Its totient is φ = 136702080.

The previous prime is 245211931. The next prime is 245211943. The reversal of 245211939 is 939112542.

It is not a de Polignac number, because 245211939 - 2³ = 245211931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245211931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44884 + ... + 50049.

It is an arithmetic number, because the mean of its divisors is an integer number (17277988).

Almost surely, 2^245211939 is an apocalyptic number.

245211939 is a deficient number, since it is larger than the sum of its proper divisors (169459773).

245211939 is a wasteful number, since it uses less digits than its factorization.

245211939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94987 (or 94984 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 245211939 is about 15659.2445220068. The cubic root of 245211939 is about 625.9128540136.

The spelling of 245211939 in words is "two hundred forty-five million, two hundred eleven thousand, nine hundred thirty-nine".