63977442 has 16 divisors (see below), whose sum is σ = 128033472. Its totient is φ = 21312720.

The previous prime is 63977437. The next prime is 63977449. The reversal of 63977442 is 24477936.

It is a super-2 number, since 2×63977442² = 8186226169726728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63977394 and 63977403.

It is not an unprimeable number, because it can be changed into a prime (63977449) 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, 16467 + ... + 19977.

It is an arithmetic number, because the mean of its divisors is an integer number (8002092).

Almost surely, 2^63977442 is an apocalyptic number.

63977442 is an abundant number, since it is smaller than the sum of its proper divisors (64056030).

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

63977442 is a wasteful number, since it uses less digits than its factorization.

63977442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553.

The product of its digits is 254016, while the sum is 42.

The square root of 63977442 is about 7998.5900007439. The cubic root of 63977442 is about 399.9529986441.

The spelling of 63977442 in words is "sixty-three million, nine hundred seventy-seven thousand, four hundred forty-two".