80490465 has 48 divisors (see below), whose sum is σ = 153653760. Its totient is φ = 38653440.

The previous prime is 80490463. The next prime is 80490469. The reversal of 80490465 is 56409408.

It is not a de Polignac number, because 80490465 - 2¹ = 80490463 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80490463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55216 + ... + 56654.

It is an arithmetic number, because the mean of its divisors is an integer number (3201120).

Almost surely, 2^80490465 is an apocalyptic number.

It is an amenable number.

80490465 is a deficient number, since it is larger than the sum of its proper divisors (73163295).

80490465 is a wasteful number, since it uses less digits than its factorization.

80490465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1571 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 80490465 is about 8971.6478419519. The cubic root of 80490465 is about 431.7657069316.

It can be divided in two parts, 80 and 490465, that added together give a triangular number (490545 = T₉₉₀).

The spelling of 80490465 in words is "eighty million, four hundred ninety thousand, four hundred sixty-five".