149078017 has 4 divisors (see below), whose sum is σ = 162630576. Its totient is φ = 135525460.

The previous prime is 149077997. The next prime is 149078023. The reversal of 149078017 is 710870941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 710870941 = 11 ⋅64624631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149078017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149078077) 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, 6776263 + ... + 6776284.

It is an arithmetic number, because the mean of its divisors is an integer number (40657644).

It is a Proth number, since it is equal to 9099 ⋅ 2¹⁴ + 1 and 9099 < 2¹⁴.

Almost surely, 2^149078017 is an apocalyptic number.

It is an amenable number.

149078017 is a deficient number, since it is larger than the sum of its proper divisors (13552559).

149078017 is a wasteful number, since it uses less digits than its factorization.

149078017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13552558.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 149078017 is about 12209.7508983599. The cubic root of 149078017 is about 530.2384319393.

It can be divided in two parts, 1490 and 78017, that added together give a cube (79507 = 43³).

The spelling of 149078017 in words is "one hundred forty-nine million, seventy-eight thousand, seventeen".