145779469 has 12 divisors (see below), whose sum is σ = 160737948. Its totient is φ = 132112640.

The previous prime is 145779463. The next prime is 145779481. The reversal of 145779469 is 964977541.

It can be written as a sum of positive squares in 2 ways, for example, as 104652900 + 41126569 = 10230^2 + 6413^2 .

It is not a de Polignac number, because 145779469 - 2⁷ = 145779341 is a prime.

It is a super-2 number, since 2×145779469² = 42503307163843922, 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 (145779463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41007 + ... + 44419.

It is an arithmetic number, because the mean of its divisors is an integer number (13394829).

Almost surely, 2^145779469 is an apocalyptic number.

It is an amenable number.

145779469 is a deficient number, since it is larger than the sum of its proper divisors (14958479).

145779469 is a wasteful number, since it uses less digits than its factorization.

145779469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788 (or 3777 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 52.

The square root of 145779469 is about 12073.9168872409. The cubic root of 145779469 is about 526.2984867770.

The spelling of 145779469 in words is "one hundred forty-five million, seven hundred seventy-nine thousand, four hundred sixty-nine".