149944861 has 16 divisors (see below), whose sum is σ = 171399168. Its totient is φ = 129927600.

The previous prime is 149944853. The next prime is 149944867. The reversal of 149944861 is 168449941.

It is not a de Polignac number, because 149944861 - 2³ = 149944853 is a prime.

It is a super-2 number, since 2×149944861² = 44966922680618642, 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 (149944867) 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, 19566 + ... + 26128.

It is an arithmetic number, because the mean of its divisors is an integer number (10712448).

Almost surely, 2^149944861 is an apocalyptic number.

149944861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

149944861 is a deficient number, since it is larger than the sum of its proper divisors (21454307).

149944861 is a wasteful number, since it uses less digits than its factorization.

149944861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672.

The product of its digits is 248832, while the sum is 46.

The square root of 149944861 is about 12245.1974667622. The cubic root of 149944861 is about 531.2641722448.

It can be divided in two parts, 1499 and 44861, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 149944861 in words is "one hundred forty-nine million, nine hundred forty-four thousand, eight hundred sixty-one".