46978669 has 4 divisors (see below), whose sum is σ = 47250396. Its totient is φ = 46706944.

The previous prime is 46978643. The next prime is 46978681. The reversal of 46978669 is 96687964.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41757444 + 5221225 = 6462^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 46978669 - 2¹¹ = 46976621 is a prime.

It is a super-2 number, since 2×46978669² = 4413990682023122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46978619) 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, 135604 + ... + 135949.

It is an arithmetic number, because the mean of its divisors is an integer number (11812599).

Almost surely, 2^46978669 is an apocalyptic number.

It is an amenable number.

46978669 is a deficient number, since it is larger than the sum of its proper divisors (271727).

46978669 is a wasteful number, since it uses less digits than its factorization.

46978669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271726.

The product of its digits is 3919104, while the sum is 55.

The square root of 46978669 is about 6854.0987007775. The cubic root of 46978669 is about 360.8280041005.

It can be divided in two parts, 4697 and 8669, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 46978669 in words is "forty-six million, nine hundred seventy-eight thousand, six hundred sixty-nine".