629460978 has 16 divisors (see below), whose sum is σ = 1259966016. Its totient is φ = 209646320.

The previous prime is 629460977. The next prime is 629461003. The reversal of 629460978 is 879064926.

It is a happy number.

It is a super-2 number, since 2×629460978² = 792442245649432968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 629460978.

It is not an unprimeable number, because it can be changed into a prime (629460977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35553 + ... + 50228.

It is an arithmetic number, because the mean of its divisors is an integer number (78747876).

Almost surely, 2^629460978 is an apocalyptic number.

629460978 is an abundant number, since it is smaller than the sum of its proper divisors (630505038).

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

629460978 is a wasteful number, since it uses less digits than its factorization.

629460978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87009.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 629460978 is about 25089.0609230397. The cubic root of 629460978 is about 857.0173301018.

The spelling of 629460978 in words is "six hundred twenty-nine million, four hundred sixty thousand, nine hundred seventy-eight".