774489490 has 8 divisors (see below), whose sum is σ = 1394081100. Its totient is φ = 309795792.

The previous prime is 774489473. The next prime is 774489491. The reversal of 774489490 is 94984477.

It can be written as a sum of positive squares in 2 ways, for example, as 687645729 + 86843761 = 26223^2 + 9319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (774489491) 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, 38724465 + ... + 38724484.

Almost surely, 2^774489490 is an apocalyptic number.

774489490 is a deficient number, since it is larger than the sum of its proper divisors (619591610).

774489490 is a wasteful number, since it uses less digits than its factorization.

774489490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77448956.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 774489490 is about 27829.6512734170. The cubic root of 774489490 is about 918.3435418672.

The spelling of 774489490 in words is "seven hundred seventy-four million, four hundred eighty-nine thousand, four hundred ninety".