149743797 has 16 divisors (see below), whose sum is σ = 228433920. Its totient is φ = 85473072.

The previous prime is 149743793. The next prime is 149743801. The reversal of 149743797 is 797347941.

It is an interprime number because it is at equal distance from previous prime (149743793) and next prime (149743801).

It is not a de Polignac number, because 149743797 - 2² = 149743793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149743793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18388 + ... + 25250.

It is an arithmetic number, because the mean of its divisors is an integer number (14277120).

Almost surely, 2^149743797 is an apocalyptic number.

It is an amenable number.

149743797 is a deficient number, since it is larger than the sum of its proper divisors (78690123).

149743797 is a wasteful number, since it uses less digits than its factorization.

149743797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7912.

The product of its digits is 1333584, while the sum is 51.

The square root of 149743797 is about 12236.9848001867. The cubic root of 149743797 is about 531.0266051835.

The spelling of 149743797 in words is "one hundred forty-nine million, seven hundred forty-three thousand, seven hundred ninety-seven".