149405972 has 6 divisors (see below), whose sum is σ = 261460458. Its totient is φ = 74702984.

The previous prime is 149405959. The next prime is 149405983. The reversal of 149405972 is 279504941.

It can be written as a sum of positive squares in only one way, i.e., 148693636 + 712336 = 12194^2 + 844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18675743 + ... + 18675750.

It is an arithmetic number, because the mean of its divisors is an integer number (43576743).

Almost surely, 2^149405972 is an apocalyptic number.

It is an amenable number.

149405972 is a deficient number, since it is larger than the sum of its proper divisors (112054486).

149405972 is a wasteful number, since it uses less digits than its factorization.

149405972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37351497 (or 37351495 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 149405972 is about 12223.1735649953. The cubic root of 149405972 is about 530.6269689573.

The spelling of 149405972 in words is "one hundred forty-nine million, four hundred five thousand, nine hundred seventy-two".