240990749 has 4 divisors (see below), whose sum is σ = 243894336. Its totient is φ = 238087164.

The previous prime is 240990733. The next prime is 240990767. The reversal of 240990749 is 947099042.

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 a cyclic number.

It is not a de Polignac number, because 240990749 - 2⁴ = 240990733 is a prime.

It is a super-2 number, since 2×240990749² = 116153082207162002, 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 (240990709) 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, 1451669 + ... + 1451834.

It is an arithmetic number, because the mean of its divisors is an integer number (60973584).

Almost surely, 2^240990749 is an apocalyptic number.

It is an amenable number.

240990749 is a deficient number, since it is larger than the sum of its proper divisors (2903587).

240990749 is an equidigital number, since it uses as much as digits as its factorization.

240990749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903586.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 240990749 is about 15523.8767387531. The cubic root of 240990749 is about 622.3004625974.

The spelling of 240990749 in words is "two hundred forty million, nine hundred ninety thousand, seven hundred forty-nine".