46987978 has 4 divisors (see below), whose sum is σ = 70481970. Its totient is φ = 23493988.

The previous prime is 46987961. The next prime is 46987991. The reversal of 46987978 is 87978964.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40921609 + 6066369 = 6397^2 + 2463^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11746993 + ... + 11746996.

Almost surely, 2^46987978 is an apocalyptic number.

46987978 is a deficient number, since it is larger than the sum of its proper divisors (23493992).

46987978 is a wasteful number, since it uses less digits than its factorization.

46987978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23493991.

The product of its digits is 6096384, while the sum is 58.

The square root of 46987978 is about 6854.7777498618. Note that the first 4 decimals coincide. The cubic root of 46987978 is about 360.8518356686.

The spelling of 46987978 in words is "forty-six million, nine hundred eighty-seven thousand, nine hundred seventy-eight".