240869397 has 4 divisors (see below), whose sum is σ = 321159200. Its totient is φ = 160579596.

The previous prime is 240869393. The next prime is 240869429. The reversal of 240869397 is 793968042.

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 240869397 - 2² = 240869393 is a prime.

It is a super-2 number, since 2×240869397² = 116036132822287218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240869393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40144897 + ... + 40144902.

It is an arithmetic number, because the mean of its divisors is an integer number (80289800).

Almost surely, 2^240869397 is an apocalyptic number.

It is an amenable number.

240869397 is a deficient number, since it is larger than the sum of its proper divisors (80289803).

240869397 is an equidigital number, since it uses as much as digits as its factorization.

240869397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80289802.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 240869397 is about 15519.9676868220. The cubic root of 240869397 is about 622.1959909730.

The spelling of 240869397 in words is "two hundred forty million, eight hundred sixty-nine thousand, three hundred ninety-seven".