140269779 has 32 divisors (see below), whose sum is σ = 225503040. Its totient is φ = 85660416.

The previous prime is 140269777. The next prime is 140269859. The reversal of 140269779 is 977962041.

It is not a de Polignac number, because 140269779 - 2¹ = 140269777 is a prime.

It is a super-2 number, since 2×140269779² = 39351221801417682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140269777) 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 31 ways as a sum of consecutive naturals, for example, 46629 + ... + 49545.

It is an arithmetic number, because the mean of its divisors is an integer number (7046970).

Almost surely, 2^140269779 is an apocalyptic number.

140269779 is a deficient number, since it is larger than the sum of its proper divisors (85233261).

140269779 is a wasteful number, since it uses less digits than its factorization.

140269779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076 (or 3070 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 140269779 is about 11843.5543229218. The cubic root of 140269779 is about 519.5827261457.

The spelling of 140269779 in words is "one hundred forty million, two hundred sixty-nine thousand, seven hundred seventy-nine".