621449954 has 8 divisors (see below), whose sum is σ = 932919120. Its totient is φ = 310476916.

The previous prime is 621449953. The next prime is 621449999. The reversal of 621449954 is 459944126.

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 (621449953) 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, 120884 + ... + 125919.

It is an arithmetic number, because the mean of its divisors is an integer number (116614890).

Almost surely, 2^621449954 is an apocalyptic number.

621449954 is a deficient number, since it is larger than the sum of its proper divisors (311469166).

621449954 is a wasteful number, since it uses less digits than its factorization.

621449954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248064.

The product of its digits is 311040, while the sum is 44.

The square root of 621449954 is about 24928.8979700267. The cubic root of 621449954 is about 853.3661004602.

The spelling of 621449954 in words is "six hundred twenty-one million, four hundred forty-nine thousand, nine hundred fifty-four".