245397939 has 16 divisors (see below), whose sum is σ = 349274880. Its totient is φ = 152802720.

The previous prime is 245397877. The next prime is 245397959. The reversal of 245397939 is 939793542.

It is not a de Polignac number, because 245397939 - 2⁷ = 245397811 is a prime.

It is a super-3 number, since 3×245397939³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245397891 and 245397900.

It is not an unprimeable number, because it can be changed into a prime (245397959) 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, 26272 + ... + 34365.

It is an arithmetic number, because the mean of its divisors is an integer number (21829680).

Almost surely, 2^245397939 is an apocalyptic number.

245397939 is a deficient number, since it is larger than the sum of its proper divisors (103876941).

245397939 is a wasteful number, since it uses less digits than its factorization.

245397939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60730.

The product of its digits is 1837080, while the sum is 51.

The square root of 245397939 is about 15665.1823800427. The cubic root of 245397939 is about 626.0710713879.

The spelling of 245397939 in words is "two hundred forty-five million, three hundred ninety-seven thousand, nine hundred thirty-nine".