776949490 has 8 divisors (see below), whose sum is σ = 1398509100. Its totient is φ = 310779792.

The previous prime is 776949473. The next prime is 776949491. The reversal of 776949490 is 94949677.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 772450849 + 4498641 = 27793^2 + 2121^2 .

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

It is a super-2 number, since 2×776949490² = 1207301020022520200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (776949491) 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, 38847465 + ... + 38847484.

Almost surely, 2^776949490 is an apocalyptic number.

776949490 is a deficient number, since it is larger than the sum of its proper divisors (621559610).

776949490 is a wasteful number, since it uses less digits than its factorization.

776949490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77694956.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 776949490 is about 27873.8136967298. The cubic root of 776949490 is about 919.3148214341.

The spelling of 776949490 in words is "seven hundred seventy-six million, nine hundred forty-nine thousand, four hundred ninety".