154899466 has 4 divisors (see below), whose sum is σ = 232349202. Its totient is φ = 77449732.

The previous prime is 154899463. The next prime is 154899523. The reversal of 154899466 is 664998451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664998451 = 13 ⋅51153727.

It can be written as a sum of positive squares in only one way, i.e., 106193025 + 48706441 = 10305^2 + 6979^2 .

It is not an unprimeable number, because it can be changed into a prime (154899463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38724865 + ... + 38724868.

Almost surely, 2^154899466 is an apocalyptic number.

154899466 is a deficient number, since it is larger than the sum of its proper divisors (77449736).

154899466 is an equidigital number, since it uses as much as digits as its factorization.

154899466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77449735.

The product of its digits is 1866240, while the sum is 52.

The square root of 154899466 is about 12445.8614004817. The cubic root of 154899466 is about 537.0523733838.

The spelling of 154899466 in words is "one hundred fifty-four million, eight hundred ninety-nine thousand, four hundred sixty-six".