4629978 has 12 divisors (see below), whose sum is σ = 10031658. Its totient is φ = 1543320.

The previous prime is 4629971. The next prime is 4629979. The reversal of 4629978 is 8799264.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3583449 + 1046529 = 1893^2 + 1023^2 .

It is not an unprimeable number, because it can be changed into a prime (4629971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128593 + ... + 128628.

Almost surely, 2^4629978 is an apocalyptic number.

4629978 is an abundant number, since it is smaller than the sum of its proper divisors (5401680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4629978 is a wasteful number, since it uses less digits than its factorization.

4629978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257229 (or 257226 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 4629978 is about 2151.7383669954. The cubic root of 4629978 is about 166.6708470063.

It can be divided in two parts, 462 and 9978, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 4629978 in words is "four million, six hundred twenty-nine thousand, nine hundred seventy-eight".