1479402369 has 9 divisors (see below), whose sum is σ = 2137081219. Its totient is φ = 986191320.

The previous prime is 1479402347. The next prime is 1479402383. The reversal of 1479402369 is 9632049741.

It is a happy number.

The square root of 1479402369 is 38463.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 82137969 + 1397264400 = 9063^2 + 37380^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1479402369 - 2¹³ = 1479394177 is a prime.

It is a super-2 number, since 2×1479402369² = 4377262738805624322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1479402319) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 108979 + ... + 121799.

Almost surely, 2^1479402369 is an apocalyptic number.

1479402369 is the 38463-rd square number.

1479402369 is the 19232-nd centered octagonal number.

It is an amenable number.

1479402369 is a deficient number, since it is larger than the sum of its proper divisors (657678850).

1479402369 is an frugal number, since it uses more digits than its factorization.

1479402369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25648 (or 12824 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The cubic root of 1479402369 is about 1139.4504299356.

The spelling of 1479402369 in words is "one billion, four hundred seventy-nine million, four hundred two thousand, three hundred sixty-nine".