154390797 has 18 divisors (see below), whose sum is σ = 245127246. Its totient is φ = 93569520.

The previous prime is 154390777. The next prime is 154390799. The reversal of 154390797 is 797093451.

It can be written as a sum of positive squares in only one way, i.e., 102637161 + 51753636 = 10131^2 + 7194^2 .

It is not a de Polignac number, because 154390797 - 2¹⁰ = 154389773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154390799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69798 + ... + 71975.

Almost surely, 2^154390797 is an apocalyptic number.

It is an amenable number.

154390797 is a deficient number, since it is larger than the sum of its proper divisors (90736449).

154390797 is a wasteful number, since it uses less digits than its factorization.

154390797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141801 (or 141787 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 154390797 is about 12425.4093292736. The cubic root of 154390797 is about 536.4638594735.

The spelling of 154390797 in words is "one hundred fifty-four million, three hundred ninety thousand, seven hundred ninety-seven".