1440150379 has 4 divisors (see below), whose sum is σ = 1475276040. Its totient is φ = 1405024720.

The previous prime is 1440150331. The next prime is 1440150421. The reversal of 1440150379 is 9730510441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9730510441 = 86011 ⋅113131.

It is a cyclic number.

It is not a de Polignac number, because 1440150379 - 2¹⁷ = 1440019307 is a prime.

It is a super-2 number, since 2×1440150379² = 4148066228267687282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440150479) 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, 17562769 + ... + 17562850.

It is an arithmetic number, because the mean of its divisors is an integer number (368819010).

Almost surely, 2^1440150379 is an apocalyptic number.

1440150379 is a deficient number, since it is larger than the sum of its proper divisors (35125661).

1440150379 is an equidigital number, since it uses as much as digits as its factorization.

1440150379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35125660.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1440150379 is about 37949.3132875945. The cubic root of 1440150379 is about 1129.2825421937.

The spelling of 1440150379 in words is "one billion, four hundred forty million, one hundred fifty thousand, three hundred seventy-nine".